About this Item MATERIAL OF BREATHABLE RASH GUARD: Our quick dry swim shirts is made of 82% Nylon and 18% Spandex, providing enough elasticity that makes you feel free with no pressure. This lightweight swim rash guard features a flatlock stitch design that makes the women swim shirts long sleeve durable and comfortable fit. ZIPPER FRONT SWIM TOPS: zipper swim shirts for women are designed with a zipper on the chest for easy opening and closure. The zip up swim rash guard uses a high-quality material zipper, which is durable, smooth, safe, not easy to slip off. The side neckline has an anti-abrasion stopper to prevent the zipper from scratching skin.