NWT Madewell Black One-Shoulder One-Piece Swimsuit Size Small Size: S Madewell MSRP $88 Sustainable and swim-ready, our Madewell Second Wave collection comes in feel-good recycled fabric. This sleek one-piece swimsuit has a sporty one-shoulder with double straps in the back for adjustable support. Moderate support. Moderate coverage. UPF 50 sun protection. 82% recycled polyamide/18% elastane. Do Well: made with recycled fibers that could have otherwise ended up in landfills. Machine wash. Women Swim One Piece