Sustainable swimwear represents a revolutionary shift in how we approach beach fashion, combining style, comfort, and environmental responsibility. Unlike traditional swimwear made from virgin materials that contribute to ocean pollution, sustainable swimwear is crafted from recycled ocean waste, plastic bottles, and plant-based materials that help heal our planet while keeping you looking fabulous by the pool or beach.
The swimwear industry has long been dominated by fast fashion practices that prioritize low costs over environmental impact. Traditional swimsuit manufacturing relies heavily on petroleum-based synthetic fabrics, chemical-intensive dyes, and wasteful production processes that contribute significantly to ocean pollution through microplastic shedding and manufacturing runoff.
Why Sustainable Swimwear Matters in 2025
Environmental Impact of Traditional Swimwear Manufacturing
The conventional swimwear industry presents several environmental challenges that make sustainable alternatives increasingly important:
- Microplastic Pollution: Traditional synthetic swimwear sheds thousands of microplastic fibers with each wash, directly contributing to ocean contamination
- Resource Depletion: Virgin polyester and nylon production requires significant petroleum resources and energy-intensive manufacturing processes
- Chemical Processing: Conventional swimwear often involves harmful chemical treatments and dyes that pollute waterways during production
- Waste Generation: Fast fashion swimwear cycles create enormous textile waste, with most suits lasting only one season
Ocean Pollution from Synthetic Fabrics
Every time you wash a traditional swimsuit, it releases microscopic plastic fibers into wastewater systems. These microplastics eventually reach our oceans, where they’re consumed by marine life and enter our food chain. Studies show that over 700,000 fibers can be released from synthetic garments during a single wash load.
Benefits of Choosing Sustainable Alternatives
Sustainable swimwear offers compelling advantages beyond environmental protection:
- Superior Durability: High-quality recycled materials often outperform virgin synthetics in strength and longevity
- Enhanced Comfort: Advanced sustainable fabrics provide better stretch, recovery, and UV protection
- Ethical Production: Sustainable brands typically ensure fair labor practices and safe working conditions
- Innovation Leadership: Eco-friendly brands often lead in design innovation and performance features
Understanding Sustainable Swimwear Materials
ECONYL® Regenerated Nylon: Ocean Waste to Fashion
ECONYL® represents the gold standard in sustainable swimwear materials. This innovative fabric is created by collecting discarded fishing nets, fabric scraps, and other nylon waste from oceans and landfills. Through a regeneration process, these materials are broken down to their molecular level and reformed into new, high-performance nylon fiber.
Key Benefits of ECONYL®:
- Identical performance to virgin nylon with superior durability
- Infinitely recyclable without quality degradation
- Excellent chlorine and UV resistance
- Saves 70,000 barrels of crude oil per 10,000 tons of ECONYL® produced
REPREVE® Recycled Polyester
REPREVE® transforms plastic bottles into high-performance swimwear fabric. Each swimsuit made from REPREVE® typically contains 5-13 recycled plastic bottles, depending on the garment type, preventing them from entering landfills or oceans.
REPREVE® Advantages:
- Exceptional moisture-wicking properties
- Enhanced color retention and fade resistance
- Reduced carbon footprint compared to virgin polyester
- Traceable supply chain with verified recycled content
Plant-Based Polyamides and Bio-Based Materials
The latest innovation in sustainable swimwear includes plant-based alternatives like EVO by Fulgar®, which combines renewable plant sources with recycled materials to create plastic-free swimwear options.
Recycled Polyamide vs. Virgin Materials Comparison
| Factor | Recycled Polyamide | Virgin Polyamide |
|---|---|---|
| Environmental Impact | 69-76% lower CO2 emissions | High carbon footprint |
| Durability | Equal or superior | Standard performance |
| UV Protection | Enhanced UPF ratings | Basic protection |
| Cost | Slightly higher initially | Lower upfront cost |
OEKO-TEX Certifications and What They Mean
OEKO-TEX Standard 100 certification ensures that swimwear fabrics are free from harmful chemicals and safe for human skin. This certification tests for over 100 substances including formaldehyde, heavy metals, and pesticides.
Complete Brand Directory: 25+ Sustainable Swimwear Brands Ranked for 2025
Best Overall Sustainable Swimwear Brands
1. Summersalt
Why We Love It: Data-driven fit using 1.5 million measurements from 10,000 women
Materials: Recycled polyamide with 4x compression and 5x strength
Price Range: Separates from $45, one-pieces from $95
Size Range: XS-2X with long torso options
Standout Features: WRAP & BSCI certified production, maternity options
2. Reformation
Why We Love It: Elevated, chic designs with innovative materials
Materials: EVO by Fulgar® (plant-based) and ECONYL® recycled nylon
Price Range: Separates from $78, one-pieces from $148
Size Range: XS-XL
Standout Features: Plastic-free options, soft cotton-like feel
3. Andie
Why We Love It: Personalized fit consultations and modern cuts
Materials: Recycled nylon and polyester
Price Range: Separates from $52, one-pieces from $112
Size Range: XXS-XXXL
Standout Features: Style quizzes, fitting consultations, recycled packaging
Most Affordable Sustainable Options
4. Quince
Why We Love It: Budget-friendly without compromising quality
Materials: Recycled polyamide with UPF 50+ protection
Price Range: Separates from $25, one-pieces from $50
Size Range: XS-XL
Standout Features: Chlorine, sunscreen, and oil resistant
5. Boden
Why We Love It: UK-designed with excellent return policy
Materials: Majority recycled polyester and plastics
Price Range: Separates from $42, one-pieces from $98
Size Range: US 2-22
Standout Features: 365-day return policy, global shipping
6. TomboyX
Why We Love It: Gender-neutral designs with incredible size range
Materials: OEKO-TEX certified recycled polyester
Price Range: Separates from $27, unisuits from $57
Size Range: XS-6X
Standout Features: B Corp certified, UPF sun protection
Size Inclusive Champions
7. Kitty and Vibe
Why We Love It: Revolutionary booty-size specific bottoms
Materials: SPF 50+ recycled fabric from Colombia
Price Range: Separates from $72, one-pieces from $138
Size Range: XS-6X
Standout Features: Fit-tested across four size stages, quick-drying
8. Londre
Why We Love It: Minimalist designs that double as bodywear
Materials: Recycled plastic bottles
Price Range: Separates from $43, one-pieces from $159
Size Range: XS-5XL
Standout Features: Versatile styling, unique asymmetrical cuts
Active and Performance Swimwear
9. Patagonia
Why We Love It: Unmatched durability and environmental commitment
Materials: Fair Trade recycled nylon and polyester
Price Range: Separates from $65, one-pieces from $139
Size Range: XS-XL
Standout Features: 1% for the Planet member, reversible options
10. Carve Designs
Why We Love It: Surf-tested performance with feminine style
Materials: 95% recycled/upcycled materials
Price Range: Separates from $48, one-pieces from $84
Size Range: XS-XL
Standout Features: Advanced filtering options, surf-specific features
Luxury and Premium Brands
11. Vitamin A
Why We Love It: California-made with ’70s beach glamour inspiration
Materials: REPREVE® recycled nylon and plant-based fibers
Price Range: Separates from $84, one-pieces from $165
Size Range: XS-XL
Standout Features: EcoLux™ and EcoRib® proprietary fabrics
12. Galamaar
Why We Love It: Lifetime durability with proper care
Materials: ECONYL® from recycled fishing nets
Price Range: Separates from $118, one-pieces from $248
Size Range: XS-XL
Standout Features: LA-made, family-owned manufacturer
Modest Coverage Options
13. Jessica Rey Swimwear
Why We Love It: Modest designs without sacrificing style
Materials: 100% regenerated EcoLux fabrics from fishing nets
Price Range: Separates from $52, one-pieces from $126
Size Range: XXS-1X
Standout Features: Swim dresses, tankinis, mommy-and-me sets
International Sustainable Brands
14. Youswim (UK)
Why We Love It: Revolutionary seven-sizes-in-one concept
Materials: OEKO-TEX certified nylon, working toward recycled options
Price Range: Separates from $99, one-pieces from $149
Size Range: US 2-24
Standout Features: Plastic Negative certified, made in England
15. Abysse (Europe)
Why We Love It: Performance-focused with Global Recycled Standard certification
Materials: Post-consumer recycled polyester
Price Range: Separates from €82, one-pieces from €172
Size Range: XS-XL
Standout Features: Control Union certified, CleanHub partnership
Emerging Sustainable Brands to Watch
16. Toast Swim
Why We Love It: Slow fashion philosophy with citrus-inspired aesthetics
Materials: Sustainable fabric blends
Price Range: Mid-range pricing
Standout Features: Eco packaging, Klarna payment options
17. SoSo Swim
Why We Love It: Community-focused with thrift integration
Materials: Recycled fishing nets and ocean waste
Price Range: £40-£80
Size Range: XS-XXXL
Standout Features: 1% donation to Healthy Seas, pop-up events
18. Midori Bikinis
Why We Love It: Perfect fit guarantee with ethical production
Materials: Sustainable fabric blends
Price Range: Various price points
Standout Features: TryNow program, ambassador community
19. Dippin’ Daisy’s
Why We Love It: Trendy styles with recycled materials
Materials: Recycled fabrics
Price Range: Affordable to mid-range
Standout Features: Regular new drops, size inclusive options
20. Wolven
Why We Love It: BIPOC-owned with stunning patterns
Materials: 80% recycled plastic bottles
Price Range: Separates from $52, one-pieces from $128
Size Range: XS-XL
Standout Features: Carbon-neutral shipping, reversible designs
Additional Notable Sustainable Brands
21-25. Other Recommended Brands:
- Mara Hoffman: High-fashion sustainable swimwear with bold prints
- Girlfriend Collective: Extended size range with recycled materials
- Kotn: Organic cotton and sustainable production focus
- Botanica Workshop: Plant-dyed and naturally sustainable options
- Hunza G: Iconic crinkle fabric with timeless designs
Sustainable Swimwear Shopping Guide
How to Identify Truly Sustainable Brands vs. Greenwashing
With sustainability becoming a marketing buzzword, it’s crucial to distinguish genuine eco-friendly brands from those engaging in greenwashing. Here’s what to look for:
Red Flags of Greenwashing:
- Vague terms like “eco-friendly” without specific material details
- Focus on packaging sustainability while ignoring product materials
- Limited sustainability information on website
- No third-party certifications or transparency reports
- Extremely low prices that seem too good to be true
Signs of Genuine Sustainability:
- Specific material sourcing information (e.g., “made from 8 recycled plastic bottles”)
- Third-party certifications clearly displayed
- Detailed sustainability reports and manufacturing transparency
- Information about factory conditions and worker welfare
- Realistic pricing that reflects sustainable production costs
Key Certifications to Look For
OEKO-TEX Standard 100
Ensures fabrics are free from harmful chemicals and safe for human contact. Tests for over 100 substances including formaldehyde, heavy metals, and banned pesticides.
Global Recycled Standard (GRS)
Verifies recycled content and tracks materials through the supply chain. Also addresses social and environmental practices and chemical restrictions.
Fair Trade Certified
Guarantees fair wages, safe working conditions, and community development programs for workers in the supply chain.
WRAP (Worldwide Responsible Accredited Production)
Focuses on safe, lawful, humane, and ethical manufacturing practices in the sewn products industry.
Price Ranges and Value Analysis
Budget-Friendly ($25-$75)
Brands: Quince, TomboyX basics, Boden sale items
What to Expect: Basic sustainable materials, limited style options, good durability
Best For: First-time sustainable swimwear buyers, basic coverage needs
Mid-Range ($75-$150)
Brands: Summersalt, Andie, Reformation, Patagonia
What to Expect: High-quality recycled materials, innovative features, excellent fit
Best For: Regular swimmers seeking performance and style
Premium ($150-$250+)
Brands: Vitamin A, Galamaar, Youswim
What to Expect: Luxury materials, unique designs, lifetime durability potential
Best For: Investment pieces, special occasions, maximum longevity
Fit and Sizing Considerations for Online Shopping
Shopping for swimwear online requires careful attention to sizing and fit details:
Essential Measurements to Take:
- Bust: Around the fullest part of your chest
- Underbust: Directly under your bust line
- Waist: At your natural waistline
- Hips: Around the fullest part of your hips
- Torso: From shoulder to crotch for one-piece fits
Brand-Specific Sizing Notes:
- Summersalt: Data-driven fit tends to run true to size
- Reformation: European-inspired cuts may run smaller
- TomboyX: Gender-neutral sizing focuses on comfort over curves
- Patagonia: Athletic fit designed for active use
Return Policies and Try-Before-You-Buy Options
Many sustainable swimwear brands offer generous return policies to encourage online shopping:
- Boden: 365-day return policy for store credit
- Summersalt: 30-day returns with free return shipping
- Andie: Try-on program with personalized fit consultations
- Midori Bikinis: TryNow program for home try-ons
Style Guide by Body Type & Coverage Preferences
One-Piece Swimsuits: Coverage and Support Options
Athletic/Rectangular Body Types
Best Styles: Cut-out details, ruching, bold prints
Recommended Brands: Patagonia (sporty cuts), Reformation (architectural details)
Features to Look For: Side cut-outs, textured fabrics, asymmetrical designs
Curvy/Hourglass Body Types
Best Styles: Wrap details, supportive underwire, adjustable straps
Recommended Brands: Summersalt (data-driven fit), Andie (supportive construction)
Features to Look For: Built-in bras, tummy control panels, adjustable coverage
Plus-Size Considerations
Best Styles: Longer torso options, supportive construction, flattering prints
Recommended Brands: TomboyX (XS-6X), Kitty and Vibe (XS-6X), Londre (XS-5XL)
Features to Look For: Wide straps, shelf bras, tummy control technology
Bikini Styles: Finding Your Perfect Match
Triangle Bikinis
Best For: Smaller busts, adjustable coverage preferences
Sustainability Leaders: Vitamin A, Wolven, Toast Swim
Styling Tips: Look for adjustable ties, removable padding options
Bandeau Styles
Best For: Even tan lines, strapless support needs
Sustainability Leaders: Reformation, SoSo Swim
Styling Tips: Choose styles with silicone grippers or internal support
Underwire and Supportive Tops
Best For: Larger busts, active swimming
Sustainability Leaders: Summersalt, Andie, Jessica Rey
Styling Tips: Prioritize adjustable straps and band sizing
High-Waisted Bottoms
Best For: Vintage aesthetics, tummy coverage, longer torsos
Sustainability Leaders: Reformation, Vitamin A, Boden
Styling Tips: Balance proportions with appropriate top styles
Coverage Levels: From Minimal to Full
Minimal Coverage
Characteristics: String bikinis, minimal fabric, maximum tan exposure
Best Sustainable Options: Vitamin A, Wolven reversible styles
Considerations: Higher quality materials essential for durability
Moderate Coverage
Characteristics: Balanced coverage and style, versatile for most activities
Best Sustainable Options: Summersalt, Andie, Reformation
Considerations: Most popular choice, widest style selection available
Full Coverage
Characteristics: Maximum coverage, family-friendly, sun protection focus
Best Sustainable Options: Jessica Rey, TomboyX, Patagonia
Considerations: Often includes UPF protection and performance features
Special Considerations
Maternity Swimwear
Sustainable Leaders: Summersalt, Andie
Key Features: Expandable panels, supportive construction, nursing-friendly designs
Material Benefits: Recycled fabrics often provide superior stretch and recovery
Long Torso Fits
Sustainable Leaders: Summersalt, Boden
Key Features: Extended torso measurements, proper proportional fit
Sizing Tips: Always check torso length measurements, not just bust/hip sizes
Manufacturing & Ethics Deep Dive
Fair Trade and Ethical Production Practices
Sustainable swimwear brands increasingly prioritize ethical manufacturing alongside environmental responsibility. Fair trade practices ensure workers receive living wages, safe working conditions, and community investment programs.
Key Ethical Manufacturing Standards:
- Living Wages: Compensation that covers basic needs plus discretionary income
- Safe Working Conditions: Proper ventilation, safety equipment, reasonable hours
- Worker Rights: Freedom of association, collective bargaining, no child labor
- Community Investment: Education programs, healthcare, infrastructure development
Made in USA vs. International Manufacturing
USA-Made Advantages:
- Stricter labor and environmental regulations
- Reduced shipping emissions and faster delivery
- Greater supply chain transparency and oversight
- Support for domestic manufacturing jobs
Leading USA-Made Brands: Vitamin A (California), Galamaar (Los Angeles), Jessica Rey (Los Angeles)
International Manufacturing Benefits:
- Access to specialized sustainable material production
- Established relationships with certified ethical factories
- Cost efficiencies that can make sustainable options more accessible
- Innovation in sustainable manufacturing techniques
Responsibly International Brands: Summersalt (WRAP/BSCI certified), Patagonia (Fair Trade certified), Boden (ethical partnerships)
Supply Chain Transparency
The most trustworthy sustainable swimwear brands provide detailed information about their supply chains:
Transparency Best Practices:
- Factory Information: Names, locations, and certifications of manufacturing partners
- Material Sourcing: Specific details about fiber origins and processing
- Audit Reports: Third-party assessments of working conditions and practices
- Impact Metrics: Quantified environmental and social benefits
Carbon Footprint and Shipping Considerations
Sustainable brands increasingly address their complete carbon footprint, including shipping and packaging. Just as companies in other industries work to reduce carbon footprint through renewable energy adoption, swimwear brands are implementing comprehensive sustainability strategies.
Carbon Reduction Strategies:
- Local Production: Manufacturing closer to target markets
- Efficient Packaging: Minimal, recyclable, or compostable materials
- Carbon Offsetting: Investment in environmental projects to offset emissions
- Slow Fashion: Reduced shipping frequency through seasonal collections
Care & Maintenance for Longevity
Proper Washing Techniques for Recycled Materials
Sustainable swimwear requires specific care to maintain its performance and extend its lifespan:
Essential Washing Steps:
- Immediate Rinse: Rinse with cool water immediately after swimming to remove chlorine, salt, and sunscreen
- Gentle Hand Wash: Use mild, eco-friendly detergent and lukewarm water
- Avoid Harsh Chemicals: Never use bleach, fabric softener, or harsh detergents
- Gentle Squeezing: Press water out gently without wringing or twisting
- Air Dry Only: Lay flat in shade, never use heat or direct sunlight
Chlorine and Saltwater Protection
Both chlorine and saltwater can degrade swimwear materials over time:
Protection Strategies:
- Pre-Swim Rinse: Saturate fabric with fresh water before entering pools or ocean
- Immediate Post-Swim Care: Rinse thoroughly within 30 minutes of swimming
- Rotation System: Use multiple suits to reduce wear on individual pieces
- Quality Investment: Higher-quality sustainable materials typically offer better chemical resistance
Sunscreen and Oil Resistance
Sunscreen and body oils can stain and degrade swimwear fabrics:
Prevention Tips:
- Allow Absorption: Let sunscreen fully absorb before putting on swimwear
- Choose Compatible Products: Use mineral sunscreens when possible
- Strategic Application: Apply sunscreen before putting on swimwear
- Quick Treatment: Address stains immediately with gentle soap and cool water
Storage and Seasonal Care Tips
Proper Storage Methods:
- Clean and Dry: Ensure suits are completely clean and dry before storage
- Flat Storage: Store flat or loosely folded to prevent stretching
- Cool, Dark Location: Avoid heat, humidity, and direct sunlight
- Breathable Containers: Use cotton bags or breathable storage solutions
When to Replace vs. Repair
Signs It’s Time to Replace:
- Significant fabric thinning or transparency
- Loss of elasticity that affects fit and support
- Permanent staining that affects appearance
- Structural damage to seams or hardware
Repair Options to Consider:
- Professional alterations for fit adjustments
- Strap replacement for hardware issues
- Seam reinforcement for minor structural problems
- Color restoration for minor fading
Future of Sustainable Swimwear
Emerging Eco-Friendly Materials and Innovations
The sustainable swimwear industry continues to evolve with groundbreaking material innovations, much like how renewable energy sources are advancing to create more sustainable solutions across industries:
Next-Generation Materials:
- Algae-Based Fabrics: Biodegradable materials derived from algae blooms
- Mushroom Leather: Mycelium-based alternatives for trim and hardware
- Ocean Plastic Innovations: Advanced processing of marine debris into high-performance fibers
- Bio-Based Elastane: Plant-derived stretch materials to replace petroleum-based spandex
Circular Fashion and Swimwear Recycling Programs
Leading brands are implementing circular economy principles:
Circular Innovation Examples:
- Take-Back Programs: Brands accepting worn swimwear for recycling
- Upcycling Initiatives: Converting old swimwear into new products
- Rental Models: Subscription services for seasonal swimwear needs
- Repair Services: Professional restoration to extend product life
Industry Trends and Predictions for 2025-2026
The movement toward sustainability continues to gain momentum across all industries, with fashion following the lead of sectors like energy that have embraced sustainable future practices. Expected developments in sustainable swimwear include:
Expected Developments:
- Increased Transparency: Blockchain tracking of materials from source to consumer
- Performance Integration: Smart fabrics with UV monitoring and temperature regulation
- Customization Technology: 3D body scanning for perfect fit without waste
- Local Production: Micro-factories reducing shipping and supporting local economies
- Biodegradable Options: Fully compostable swimwear for end-of-life disposal
Frequently Asked Questions
Is sustainable swimwear as durable as regular swimwear?
Yes, and often more so. High-quality recycled materials like ECONYL® and REPREVE® frequently outperform virgin materials in durability testing. Brands like Summersalt report their recycled fabrics have 5x the strength of conventional swimwear materials. The key is choosing reputable brands that invest in quality sustainable materials rather than cutting corners.
How much should I expect to pay for eco-friendly swimwear?
Sustainable swimwear ranges from $25-$250+, with most quality options falling between $50-$150. Budget options include Quince ($25-$50) and TomboyX ($27-$57), while mid-range brands like Summersalt ($45-$95) and Andie ($52-$112) offer excellent value. Premium brands like Galamaar ($118-$248) provide luxury materials and construction. The higher initial cost typically pays off through superior durability and performance.
What’s the difference between recycled and bio-based materials?
Recycled materials like ECONYL® and REPREVE® transform existing waste (fishing nets, plastic bottles) into new fibers, preventing waste from entering landfills or oceans. Bio-based materials like EVO by Fulgar® use renewable plant sources instead of petroleum. Both are more sustainable than virgin synthetic materials, with recycled options currently offering better performance for swimwear applications.
Can I find sustainable swimwear in extended sizes?
Absolutely! Many sustainable brands prioritize size inclusivity. TomboyX offers XS-6X, Kitty and Vibe provides XS-6X with booty-specific sizing, Londre ranges XS-5XL, and Summersalt offers XS-2X with long torso options. The sustainable fashion movement often emphasizes body positivity and inclusive sizing as part of their ethical approach.
How do I know if a brand is truly sustainable?
Look for specific material information (not just “eco-friendly” claims), third-party certifications (OEKO-TEX, GRS, Fair Trade), supply chain transparency, and detailed sustainability reports. Genuine sustainable brands provide concrete information about their environmental impact, factory conditions, and material sourcing. Be wary of vague marketing language without supporting details or certifications.
Ready to make the switch to sustainable swimwear? Start with one quality piece from a brand that aligns with your values and budget. Whether you choose an affordable option like Quince or invest in a premium piece from Reformation, you’ll be supporting a more sustainable future while looking and feeling great. Remember, the most sustainable swimsuit is one you’ll love and wear for many seasons to come.