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Our Fabric

Choosing the right fabric was at the core of our collection’s journey, we were passionate about choosing a sustainable material but didn’t want to compromise on the specification. During our research we were introduced to a fabric created by a leading Italian fabric manufacturer for swimwear, activewear and outerwear. 

Our sustainable techno-fabric is made from an ECONYL® regenerated Nylon and elastane. It’s certified as STANDARD 100 by OEKO-TEX®, this is one of the world’s best-known labels for textiles tested for harmful substances. It’s a flawless blend of performance, durability and comfort and this versatility lends itself perfectly to the multifunctional performance of our swimsuits.

Technical features

SwimThe material boasts UPF50+ sun protection with supreme chlorine and sun cream resistance. You can take comfort in the fact that you’ve invested in a durable product with ultimate protection from harmful rays for you and your little ones. It’s also 20 % thinner than traditional nylon making it quick drying and ensuring the transition between swimming and relaxing couldn’t be easier.

  • UPF 50 + sun protection
  • Ultra-chlorine resistant
  • 2x more resistant to sun cream and oils
  • Ultra-flat and quick drying

Gym- Our full coverage swimsuits were designed to be practical and supportive and can seamlessly transition into the perfect gym outfit. The flattering designs eliminate the need for layers. Gone are the days of oversized hoodies constricting our gym game. Meticulously crafted from a soft, breathable fabric that is moisture wicking, effectively pulling the moisture away from your skin leaving you cool and fresh. And if that wasn’t enough, the fabric has muscular compression properties to help improve your muscle recovery and boost your circulation.

  • Breathable
  • Moisture wicking
  • 4x muscular compression capacity

Lounge- And if the thought of swim and gym feel too tiring, our sleek designs still have you covered. Our swimsuits are perfect for lounging, the ultra-smooth fabric feels luxurious against your skin and with its high shape recovery and two way stretch it supports and flatters you in all the right places.

  • Ultra-soft
  • 2 way stretch
  • Piling resistance


At Sei Sorelle Swimwear we are committed to reducing waste and threat to our environment. Our first collection alone has rescued 624kg of waste, including 156kg of discarded fishing nets. You can play your part by choosing to shop more sustainably.

Vivienne Westwood