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Madewell Second Wave Underwire Bikini Top - true black


Select available size

This brand generally runs small

directly from Madewell (via UPS)

U.S. delivery only.

Our Madewell Second Wave swim collection has a built-in feel-good factor—the fabric was made using recycled material. Sleek and simple, this underwire demi-cup bikini top has slim adjustable straps. With sizes running from XXS to 3X, it's an "everyone needs this suit" kinda deal.
UPF 50 sun protection.
Made from 80% pre-consumer recycled nylon/20% elastane.
Do Well: This fabric is recycled from pre-consumer nylon waste like fishing nets, fabric scraps or carpet.
Our swimsuits are machine washable, but we recommend hand washing as it helps keep the fabric and the shape of the suit looking newer, longer.


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A collection of essentials for your every day. Made to be worn and loved.

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Available in 2 other colors