Can You Swim in Cotton? Everything You Need to Know
Yes — but not all cotton swimwear is created equal. Here's what actually works in the water, what doesn't, and why knitted organic cotton is changing the game.
The Short Answer
You can absolutely swim in cotton. People swam in cotton and wool for centuries before nylon was invented in 1935. The real question isn't can you — it's whether cotton performs well enough to be comfortable, flattering, and functional in water.
The answer depends entirely on how the swimwear is constructed.
Why Most People Think Cotton Can't Be Swimwear
The conventional wisdom goes: "Cotton absorbs water, gets heavy, loses its shape, and takes forever to dry."
That's true for a cotton t-shirt. And yes — cotton does absorb water, even when it's knitted. But the right construction solves for this:
Biodegradable elastane added at key points provides stretch and keeps everything secure even when wet
Adjustable ties allow you to customize fit regardless of water absorption
The result is swimwear that absorbs water naturally (as cotton does) but stays flattering, secure, and comfortable throughout your swim.
The Real Advantages of Cotton Swimwear
1. Zero Microplastics
Every time you wash a synthetic swimsuit (nylon, polyester, spandex), it sheds thousands of microplastic particles into the water. Cotton sheds nothing harmful — just natural fiber that biodegrades.
2. No Skin Irritation
If you've ever had a reaction to a swimsuit — itching, redness, or rashes — the culprit is usually synthetic dyes, spandex chemicals, or nylon against sensitive skin. Cotton is naturally hypoallergenic, breathable, and chemical-free (especially when it's GOTS certified organic).
3. Temperature Regulation
Cotton breathes. It doesn't trap heat against your skin the way polyester does. This makes cotton swimwear more comfortable during long beach days, especially in hot climates.
4. Sustainability
A nylon swimsuit takes 30-40 years to decompose. A cotton one returns to the earth naturally. If sustainability matters to you, natural fiber swimwear is the most straightforward choice you can make.
What to Look For in Cotton Swimwear
Not all cotton swimwear is equal. Here's what separates a cotton swimsuit that works from one that doesn't:
✓ Knit construction — The fabric should be knitted, not woven. This provides natural stretch and a more forgiving fit in water.
✓ Biodegradable elastane — Added at key points for secure fit and shape recovery without relying on conventional spandex throughout the garment.
✓ Adjustable ties — Keeps the suit secure even as cotton absorbs water.
✓ GOTS certification — Guarantees the cotton is truly organic, grown without synthetic pesticides, and processed without harmful chemicals.
✓ Fully fashioned construction — Pieces knit to shape (rather than cut from flat fabric) hold their form better and produce zero material waste.
✓ Natural dyes — Synthetic dyes can leach chemicals onto skin, especially in sun and saltwater. Natural dyes avoid this entirely.
How to Care for Cotton Swimwear
Cotton swimwear lasts beautifully with basic care:
Rinse in cool fresh water after each swim (salt and chlorine are what degrade any fabric)
Hand wash gently — no machine washing
Lay flat to dry — never wring or hang (this prevents stretching)
No bleach or fabric softener — unnecessary with natural fibers
With proper care, knitted cotton swimwear holds its shape and softness for years.
The Bottom Line
Can you swim in cotton? Yes. Should you? If you care about what touches your skin, what goes into the ocean, and how your clothes are made — absolutely.
Knitted organic cotton swimwear combines the comfort of natural fiber with thoughtful construction — biodegradable elastane and adjustable ties that keep everything in place. It's swimwear designed for people who want to feel good in every sense.
Kaylyn Gardner Knitwear creates artisan swimwear and knitwear from GOTS certified organic cotton with natural dyes — handcrafted in New York with zero material waste. Shop the collection →