Chlorine-resistant swimsuits: PBT, lifespan and washing

Pinup one-piece swimsuit 256P Chlorine with blue wave print, front and back

Pool chlorine tests every swimsuit. BONESWIMMER training swimsuits are built to take it: there is no elastane in the yarn. Here is what that means, what decides how long a swimsuit lasts and how to look after it once you are out of the pool.

Elastane or PBT: what changes with chlorine

Beach and leisure swimsuits, such as Alte, Dega, the beach bikinis and the Samoa swim shorts, contain a share of elastane. They are easier to put on and comfortable out of the water too, but chlorine gets to them. Training swimsuits have no elastane in the yarn: they resist chlorine and hold their shape and colour for a long time, even with daily use.

The fabrics of our training swimsuits

Pinup, Ibiza, Maui, H2otto and Ucla are made in Speed Line by M.I.T.I. (Bergamo): 100% polyester with PBT yarn, 180 g/m², elastane-free, certified OEKO-TEX Standard 100 and bluesign. Inside, the Charme lining by Piutrenove (Como; 82% polyamide, 18% elastane) adds support and softness.

New York and Alaska, from the BONESWIMMER x Vira capsule, are made in an Italian technical fabric of 51% recycled polyester and 49% PBT, also elastane-free, certified GRS and OEKO-TEX Standard 100. The exact composition of each piece is on its product page, under «Materials and care».

The print stays in the fabric

Our prints are sublimation-printed at a print works near the atelier in Gallarate: heat moves the ink from paper into the fibre, so it becomes part of the fabric rather than a layer on top. That is why the colours stay bright after months of lengths.

Chlorine even has its own print: Chlorine, on Pinup 256P, a tongue-in-cheek take on a luxury perfume label, set on blue waves.

How long a PBT swimsuit lasts

There is no single number of months: it depends on how often you swim and how you treat the swimsuit. The elastane-free fabric does not give in to chlorine; lining, seams and colours last longer if you rinse the swimsuit after every session and let it dry the right way.

Like a second skin

To do their job, training swimsuits should fit like a second skin, so a struggle to get them on at first is normal. In the water everything settles and the swimsuit becomes comfortable and stable. Pinup and Ibiza run small: go one size up from your usual clothing size. New York fits true to size. Guidance for every model is in the Size and care guide.

How to wash and dry it

After every use, rinse it in plenty of cold water to remove chlorine, salt and sun cream. Then let it air-dry, away from heat and direct sun. No washing machine, no tumble dryer, no detergent unless it is made for sportswear, never fabric softener. That way lining, seams and colours stay as they were on day one.

All training one-piece swimsuits are in Women's training one-piece swimsuits; the men's styles are in Men's training swimwear. Not sure about your size? Email info@boneswimmer.it with your height, weight, usual size and how you will use the swimsuit.

Products in this article

  • Pinup 256P — Chlorine

    Regular price 64,90 €
    Available in 4 sizes
    • +1
  • Ibiza 206I — Sushi

    Regular price 64,90 €
    Available in 7 sizes
    • +4
  • New York 001NF — Fuchsia

    Regular price 44,90 €
    Available in 5 sizes
    • +2
  • H2otto 403H — Sushi

    Regular price 45,00 €
    Available in 7 sizes
    • +4

Frequently asked questions

Does an elastane-free swimsuit really stand up to chlorine?

Yes. BONESWIMMER training swimsuits are made of PBT, with no elastane in the yarn: they resist chlorine and keep their shape and colour for a long time. Beach swimsuits with elastane, on the other hand, are sensitive to chlorine.

How long does a PBT training swimsuit last?

There's no single number of months: it depends on how often you swim and how you treat it. Rinsing it in cold water and letting it air-dry protects the lining, seams and colours.

Can I machine wash it?

No. Rinse it in plenty of cold water after every use and let it air-dry, away from heat and direct sunlight. No tumble dryer and never fabric softener.

Why is it so hard to put on?

It's meant to fit like a second skin, so a struggle at first is normal. In the water everything settles and the swimsuit becomes comfortable and stable.

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