From the sun-blocking protection to the Dri-FIT moisture-wicking technology, this men's Nike swim tee keeps you comfortable at the beach or pool. 100% Polyester Tape closure ✔ Dri-FIT fabric evaporates moisture for cool comfort, UV protection from the sun on areas covered. ✔ UPF-40 sun-blocking technology ✔ Flat seams help reduce chafing ✔ Internal swim neck tape provides additional comfort ✔ Crewneck