What The Fin - AO Technology Performs and is unparalleled beauty graphically to the lifestyle with Wicking / UPF 50+ / Antimicrobial / Quick Dry / Butter Soft Lightweight Comfort. Keeps you cool & dry. Superior moisture-wicking to improve the body's core performance. UV-certified fabrics dry rapidly with zinc technology prohibits bacteria. Permanent properties made to last, providing effective moisture-wicking & upf 50 sun blocking and butter soft wear throughout the life of the garment.