
Fabric choice is the most important factor for swimwear durability and comfort, especially for a custom swimwear manufacturer. Different fabrics influence how long swimwear lasts and how well it fits after many uses. The fabric also affects how it feels against your skin. Lab tests show that nylon-spandex blends stretch well, maintain their shape, and feel smooth. Polyester-spandex blends excel at moisture management and provide better sun protection.
Fabric Blend (Ratio) | Stretch (%) | Elastic Recovery (%) | Moisture Wicking (g/m²·h) | Hand-Feel Rating (1-10) | UV Stability | Durability (Martindale Cycles) |
---|---|---|---|---|---|---|
Nylon 75% / Spandex 25% | ~60 | ~92 (after 100 cycles) | ~800 | 9 (silky) | Moderate | ≥25,000 (warp-tricot knit) |
Polyester 80% / Spandex 20% | ~50 | ~90 (after 100 cycles) | ~1,200 | 7 (smooth) | High | ~15,000 (weft-jersey knit) |
Cotton 60% / Spandex 40% | ~40 | ~85 | ~400 | 8 (soft) | Low | N/A |
For a custom swimwear manufacturer, selecting the right fabric is crucial to producing durable and stylish swimwear. Innovative fabrics, such as regenerated nylon, now offer strength and stretch comparable to traditional materials. These advancements help swimwear last longer and provide a better fit. Understanding fabric types is essential for custom swimwear manufacturers to make informed choices and ensure customer satisfaction.
Key Takeaways
Picking the right fabric helps swimwear last and feel good. Nylon-spandex blends stretch well and feel soft. But they do not resist chlorine and sun very well. Polyester-spandex blends protect better from chlorine and UV rays. They keep colors bright and make the fabric strong. Eco-friendly fabrics like ECONYL® and REPREVE® are as strong as regular fabrics. They also help the environment. Taking care of swimwear, testing quality, and using good trims help swimwear work better and make customers happy.
Key Swimwear Fabric Qualities

Stretch and Flexibility
Swimwear needs to stretch and move with you. Spandex, also called elastane, helps swimwear stretch a lot. Spandex fibers can get six times longer and then go back to normal. This lets swimmers move easily and keeps swimwear tight after many uses. Nylon mixed with spandex is strong, stretchy, and feels smooth. Ribbed fabrics made with nylon and spandex give extra support for active swimmers. Polyester and spandex blends also stretch well and help swimwear keep its shape. These features make swimwear comfy and last longer.
Main stretch and flexibility features:
High stretch for easy movement
Keeps shape after stretching
Light feel with less bulk
Soft on the skin
Chlorine and UV Resistance
Chlorine and sunlight can hurt swimwear over time. Polyester is very good at fighting chlorine and UV rays. Polyester swimwear keeps its color and strength longer than others. Nylon feels smooth and fits well but does not fight chlorine as well as polyester. Spandex blends are comfy and tough, but spandex alone breaks down faster in pools. PBT polyester fabrics protect best and keep swimwear looking new after many swims.
Test Parameter | Measurement / Result |
---|---|
Breaking force decrease | |
Breaking force decrease | 65.7% after 300 hours chlorine exposure |
UV Protection (UPF) | 25-39 for PBT-enhanced fabrics |
Chlorine resistance rank | PBT/Polyester: Excellent (300+ hours) |
100% Polyester: Very Good (200+ hours) | |
Nylon/PBT Blend: Good (150+ hours) | |
Spandex/Lycra: Poor (50-75 hours) |

Tip: Pick swimwear with PBT or polyester blends to stop fading and sagging. This is best for people who swim a lot.
Quick-Dry and Breathability
Quick-dry and breathable fabrics make swimwear more comfy and useful. MicroTan® dries seven times faster than regular fabric. Transol dries three times faster and lets air move through tiny holes. Swimmers feel less wet and can change activities quickly. Breathable swimwear feels light and does not crease, so it is good for travel and sports. Many people like these features and give high ratings for quick-drying and light swimwear.
Quick-dry and breathability benefits:
Less wet feeling
Less skin irritation and chafing
Light design for easy movement
High ratings for active people
Swimwear makers use these fabric features to make products that last, feel good, and work well in many places. By focusing on stretch, resistance, and drying speed, they make sure swimwear fits everyone’s needs.
Swimwear Fabric Types

Nylon-Spandex Blends
Nylon-spandex blends are a common pick for swimwear. These fabrics mix nylon’s strength with spandex’s stretch. Nylon helps the fabric stay strong and bounce back after stretching. Spandex, also called Lycra, lets the fabric stretch in all directions. This makes swimwear fit tightly and keeps its shape after many wears. Nylon-spandex blends feel soft and smooth on your skin. Many people like this comfort, especially for stylish swimsuits or gentle designs. The fabric dries fast and does not tear or snag easily. But, nylon-spandex blends only protect a little from chlorine and sunlight. Over time, colors can fade and the fabric may get weaker if used in pools or sun a lot. New materials like Xtra Life LYCRA® make nylon-spandex blends last longer. This special fabric fights chlorine, heat, and sun damage. It helps swimwear last much longer than regular spandex. Still, polyester-spandex blends last even longer and keep their color better.
Note: Nylon-spandex blends are best when comfort and fit are most important. Custom swimwear makers often use this fabric because it feels nice and stretches well.
Property | Nylon-Spandex Blend |
---|---|
Comfort | Softer, smoother, silkier, gentle on skin |
Stretch & Elasticity | Superior stretch, great for compression |
Moisture Management | Absorbs sweat, less wicking |
Drying Speed | Quick drying |
Durability | Moderate durability, resists snags and tears |
UV & Chlorine Resistance | Moderate |
Polyester-Spandex Blends
Polyester-spandex blends are now the main choice for strong swimwear. Polyester protects well from chlorine, saltwater, and sunlight. This fabric keeps its shape and does not pill. It keeps bright colors even after many washes and time in the sun. Polyester dries fast and handles sweat better than nylon. This makes it great for active swimmers. Spandex in the blend gives the fabric stretch and flexibility. The fabric fits tightly, moves easily, and stays comfy for long swims. Polyester-spandex blends are good for printing designs that last. Custom swimwear makers use these blends for bright, detailed prints. These blends are tested to make sure they last, keep their color, and hold their shape. They meet safety and environmental rules like Oeko-Tex and ISO. Custom swimwear makers trust these blends for steady quality and good results.
Polyester-spandex blends have these main benefits:
Great protection from chlorine and sunlight
Very strong and keeps its shape
Dries fast and handles sweat
Good for people who swim a lot
Fabric Type | Color Retention & UV Resistance | Durability & Stretch | Notes | |
---|---|---|---|---|
Polyester-Spandex (with PBT) | High | Excellent | Very durable, resists stretching damage | Ideal for competitive swimwear |
More good things:
Does not fade or wear out fast
Spandex helps it stretch and fit well
Tip: Polyester-spandex blends are best for swimwear that needs to last, especially for people who swim often or in tough pool water.
Sustainable Options
Eco-friendly swimwear fabrics are getting more popular. ECONYL® regenerated nylon and REPREVE® recycled polyester are top choices. These fabrics use waste from oceans, landfills, or old plastic bottles. This helps the planet by making less trash. Eco-friendly fabrics are as strong as regular ones. ECONYL® protects well from chlorine and sunlight. REPREVE® stretches well, keeps color, and handles sweat. Some recycled polyester may feel a bit less soft than new polyester, but it is still comfy and works well. Plant-based polyamides, like EVO by Fulgar®, feel soft like cotton and come from plants.
Fabric Type | Durability | Comfort Features | Environmental Impact |
---|---|---|---|
ECONYL® Regenerated Nylon | Matches or exceeds virgin nylon; excellent chlorine and UV resistance | Soft, high-performance, infinitely recyclable | Made from ocean and landfill waste; saves crude oil |
REPREVE® Recycled Polyester | Durable with moisture-wicking and color retention; slightly less soft than virgin polyester | Good stretch and fade resistance | Made from recycled plastic bottles; lower carbon footprint |
Plant-Based Polyamides (e.g., EVO) | Comparable durability; plastic-free alternative | Soft, cotton-like feel | Derived from renewable plant sources; bio-based |
Eco-friendly swimwear fabrics help brands care for the planet. Custom swimwear makers use these materials to meet customer needs for green products. These fabrics may cost more and need bigger orders, but they help brands stand out.
Good things about eco-friendly swimwear fabrics:
Very strong and protects from chlorine
Feels comfy and stretches well
Better for the environment
Helps make swimwear in a responsible way
Note: Eco-friendly options let custom swimwear makers offer high-quality, green swimwear that is comfy, strong, and stylish.
The Role of Spandex/Lycra in Swimwear
Spandex, also called Lycra or elastane, is very important in swimwear. It lets the fabric stretch in all directions. This stretch makes swimwear fit tightly and lets you move easily. Xtra Life LYCRA® protects from sun and chlorine damage. It helps swimwear keep its shape and last longer. Most swimwear fabrics have about 20% spandex. This gives a good mix of stretch, breathability, and strength.
Spandex/Lycra helps swimwear by:
Letting it stretch in every direction
Keeping its fit and shape after many wears
Making it stronger against chlorine and sunlight
Adding comfort and easy movement
Custom swimwear makers use spandex blends to make swimwear that fits well and lasts. Quality teams check these fabrics to make sure they stretch, last, and feel good.
Fabric Selection for Custom Swimwear Manufacturers
Quality Testing and Certifications
Custom swimwear makers use strong quality checks. They want every swimsuit to be safe and work well. Each fabric gets tested for strength, comfort, and how it performs. These tests happen in special labs and also in real life. The table below shows some tests and why they matter:
Test Aspect | Standard(s) | Purpose/Description |
---|---|---|
4-way Stretch & Recovery | ASTM D3107, ISO 14704-1 | Measures fabric stretchability and ability to return to original shape. |
Stretch & Recovery | ASTM D4964, EN 14704-1 | Tests elasticity and recovery after pulling. |
Tensile Strength | ISO 2062 | Assesses yarn strength and stretch before breaking. |
Chlorine Resistance | AATCC TM147 | Evaluates fabric durability against chlorine exposure. |
Colorfastness | ISO 105-C06, ISO 105-X12, ISO 105-E04 | Checks color retention after washing, rubbing, and sweating. |
Abrasion Resistance | Martindale (ISO 12947), ASTM D4970 | Tests resistance to pilling and wear. |
They also check for UV protection, how fast the fabric dries, and how well it moves sweat away. People try on samples to see if the swimwear feels good and works in water. Before making lots of swimsuits, they pick the fabric, make samples, fit them, and fix any problems. Teams check every group of swimsuits to make sure they are all the same.
Certifications are very important for swimwear. Oeko-Tex Standard 100 is the most used one. It means the fabric does not have anything harmful and is safe for people. Some makers also get Oeko-Tex STeP or GOTS for extra safety and care for the planet. These certifications help customers trust the brand and show that the company cares about safety and the environment.
Tip: Always choose swimwear with good certifications. This means the fabric is safe, high-quality, and made the right way.
Customer Feedback and Real-World Use
Customer opinions help makers pick the best fabrics. They ask people what they think by surveys, reviews, and feedback forms. This helps them know what people like or do not like about swimsuits. Makers use this feedback to:
Give more choices for custom swimsuits.
Make better designs from real user ideas.
Build trust by listening to customers.
Find new styles or eco-friendly materials.
Pick fabrics that last, feel good, and are green.
Keep improving swimwear and follow new trends.
Makers also look at how fabrics work in real life. They measure stretch, recovery, chlorine and UV resistance, saltwater wear, sweat control, drying time, breathability, compression, and color staying power. The table below shows important numbers:
Performance Aspect | Metrics / Values | Purpose / Impact |
---|---|---|
Fabric Stretch | 30–60% elongation at break | Allows body contour fit and freedom of movement |
Elastic Recovery | >90% recovery after 50 cycles at 15% strain | Maintains compression and prevents sagging |
Chlorine Resistance | >90% tensile retention after 100h in 10 ppm chlorine | Ensures durability in pool environments |
UV Resistance | 75–90% strength retention at 100–200 kJ/m² UV dose | Protects fiber integrity and color stability |
Saltwater Abrasion | 3–10% abrasion increase after 10–50 salt cycles | Measures fabric wear from salt exposure |
Moisture-Wicking Rate | 0.8–1.2 cm/s (hydrophilic finishes) | Draws water away from skin for comfort |
Drying Time | 5–8 minutes (with hydrophilic finishes) | Accelerates evaporation to reduce chills |
Breathability (MVTR) | >8,000 g/m²·24 h | Allows air circulation, reduces dampness |
Compression Levels | 10–20 mmHg | Muscle stabilization and drag reduction (up to 7%) |
Fabric Weight | 140–250 gsm | Balances compression, stretch, and durability |
Color Fastness | Tested via lab protocols | Ensures color retention after exposure and washing |
Finish Durability | 20–40 wash cycles for hydrophilic and DWR finishes | Indicates longevity of fabric treatments |
Some brands use smart swimsuits with sensors. These sensors track things like heart rate and swimming speed. This helps makers see how the fabric works when people swim.

Makers change their fabric choices often, sometimes every season. This helps swimwear stay new, comfy, and work well.
Trims and Additional Materials
Good trims and extra materials matter as much as the main fabric. Trims are things like elastic bands, linings, zippers, hooks, and decorations. These must be strong and not break in chlorine, saltwater, or sunlight.
Rust-proof hardware and soft linings make swimsuits better.
Eco-friendly trims like ECONYL® and strong elastane fight chlorine, sun creams, and oils.
UV-protective trims help swimsuits last and protect skin.
Careful work and local making help control quality.
Strong trims mean fewer repairs and happy customers.
Note: Picking good trims and materials stops problems like loose stitches, weak seams, or bad fit.
The Impact of Fabric Quality on the Final Swimwear Product
Fabric quality changes how swimwear works and how happy customers are. Good materials stretch well, dry fast, and fight chlorine and sun. Using the same material every time means swimsuits match samples and have fewer mistakes. Testing color keeps swimsuits looking new, which makes customers happy.
Careful checks during making, like looking at fabric and testing, keep the brand’s good name. Top materials like Lycra and spandex last long, feel nice, and work well. Getting fabric from trusted suppliers with certifications means swimsuits are safe and high-quality.
Common mistakes are not checking stretch, using little elastane, or picking natural fibers that soak up water. These mistakes can make swimsuits sag, feel bad, and not last. Makers test every fabric and work with good mills to avoid these problems.
Custom swimwear makers often add new tech and eco-friendly choices to their fabrics. This keeps their swimsuits fresh and helps them compete.
Picking the right fabric is very important for swimwear. The fabric affects how long swimwear lasts and how it feels. Swimwear works differently because of what it is made from, how much water it takes in, and how the outside looks. Some special swimsuits, like full-body suits and compression fabrics, help swimmers go faster. They do this by making less drag and helping muscles work better. Makers who care about quality and test their products make better swimwear. They also listen to what customers want. Brands keep making swimwear better by trying new materials and asking for feedback. The best swimwear brands stay popular by using new ideas, caring for the planet, and making high-quality products.
Swimwear brands that care about quality and follow new styles keep their customers coming back.
How well swimwear works depends on fabric, quality, and new ideas.
Custom swimwear makers should always test, listen, and make things better.
FAQ
What fabric lasts longest in swimwear?
Polyester-spandex blends are the strongest for swimwear. These fabrics do not get damaged by chlorine or sunlight easily. Nylon blends do not last as long as polyester blends. Most competitive swimwear brands use polyester because it is tough and keeps its color.
Tip: Pick polyester swimwear if you swim a lot in pools.
How does spandex improve swimwear comfort?
Spandex helps swimwear stretch and move with you. Swimwear with spandex fits tightly and moves when you do. This fiber keeps the shape and stops sagging after many wears.
Spandex gives these benefits:
Better movement
Stays in place
Feels soft
Are eco-friendly swimwear fabrics as strong as traditional ones?
Eco-friendly fabrics like ECONYL® and REPREVE® are just as strong as regular nylon and polyester. These recycled fabrics do not break down from chlorine or sunlight. They work well for people who swim a lot.
Fabric Type | Durability | Eco Impact |
---|---|---|
ECONYL® | High | Excellent |
REPREVE® | High | Excellent |
How should swimwear be cared for to extend its life?
Rinse swimwear with cold water after you use it. Do not twist or put it in the dryer. Lay it flat to dry away from the sun. These steps help keep the stretch and color.
Note: Taking care of swimwear stops fading and damage.