Coral Reef Living on the Edge Black Swim TopFit Feel Stretch: Oversized, Size Down One (2XL may wear XL) Nylon Very Stretchy Removable Padding Big Busted Approved Supportive Shelf. Material: 80% Nylon & 20% Elastane Make an entrance without saying a word. Our one shoulder swim top blends architectural lines with effortless comfort. Designed with a sculptural single strap that stays put from the lounge chair to the deep end, its the perfect mix of high fashion drama and beach day practicality.