How to Choose the Right Swimwear Fabric: A Straightforward Guide to Weight, Stretch, and Chlorine Resistance

We make a lot of Swimwear Fabric. Different weights, different finishes, different fiber blends. If you're staring at our product list wondering which one fits your production run, this guide is for you.

No fluff. Just the key things to look at when picking Swimwear Fabric, and which of our stock lines match each need.

Not all swimwear is the same. The fabric you'd pick for a resort bikini isn't the same one you'd use for a competitive training suit. Here's how we break it down:

• Casual / Resort Swimwear: Worn a few times on holiday. Needs to look good, feel comfortable, hold up to sunscreen and saltwater. Durability matters, but it doesn't need to survive daily pool sessions.
• Regular Training Swimwear: Worn several times a week in a chlorinated pool. Needs strong chlorine resistance, good compression, and shape retention through repeated washing.
• Competitive / Performance Swimwear: Worn hard, washed often, needs to stay fully opaque and maintain compression over hundreds of hours in the water. This is where you want the heaviest, most durable options.

Swimwear Fabric weight directly affects opacity, compression, and how the garment feels. Here's how our stock lines up:

This is one of the most common questions we get. Here's the short version:

• Nylon: Softer hand feel, more natural drape, slight sheen. Better stretch recovery — it snaps back more fluidly. Good chlorine resistance, but polyester beats it here.
• Polyester:Drier, crispier hand feel. Best-in-class chlorine resistance — holds color and structure longer in chlorinated pools. Less stretch recovery than nylon, but the difference is minimal in a well-made Swimwear Fabric.

• Matte: No shine at all. Clean, understated. Looks sharp without being flashy. Our 220gsm Nylon Spandex Matte and 200gsm Nylon Spandex Matte are here.
• Semi-Matte: Right in the middle. A low-key, natural look that isn't completely flat. Our 190gsm Polyester Spandex Semi-Matte and 250gsm Polyester Spandex Semi-Matte fit this category.
• Lustrous: Bright, clean sheen that stays visible in and out of the water. Looks sharp underwater. Our 320gsm Nylon Spandex Lustrous is the heaviest option with this finish.

All our Swimwear Fabrics are built to handle chlorine. But some handle it better than others.

• Polyester naturally resists chlorine degradation better than nylon. If your customer is in a chlorinated pool five days a week, polyester will hold its color and structure longer.
• Nylon still holds up well — it's been the standard for swimwear for decades. But it'll show its age faster than polyester under heavy chlorine exposure.
• Rinsing with fresh water after every use extends the life of any Swimwear Fabric, regardless of fiber.

All our Swimwear Fabrics are four-way stretch with elastane content between 15% and 24%. More elastane means more compression and faster snap-back. Less elastane means a more relaxed feel.

For competitive suits and shapewear, go with higher elastane content (20%+). For everyday training and casual swimwear, 15% is plenty.

The best way to pick Swimwear Fabric is to touch it. We'll send you A4 swatches of any of the fabrics mentioned above. Tell us what you're making, and we'll recommend the right one.

For product samples, technical specification sheets, or a full color card, reach out. We're based in Fuzhou, Fujian, China, and we ship globally.