The Patagonia Women's Long-Sleeved Swell Seeker One-Piece Swimsuit blends performance, comfort and coverage for warm water surf sessions. Made of soft, stretchy and durable body fabric, it has full-arm coverage and a mock-neck design for additional protection. The set-in sleeves provide chafe-free freedom of movement through the shoulders and arms while paddling, and the full-length back zipper provides easy on/off. Full coverage in the seat; swim-specific 88% nylon/12% spandex lining lends a touch more modesty and lies softly against the skin. The Swell Seeker can also be worn over a bikini top for added support.