The Vital series has been updated to a blend of Polyester, Cotton and Spandex for better stretch and movement?? It's also quick-drying and antimicrobial to keep you feeling fresh.?? The Vital Polo is ideal for??backpacking,overnight hiking trips or weekend travel.??. . ??. . . TechDry: Our quick-dry fabric that prevents body heat loss and discomfort by absorbing moisture from the body.. Anti-Microbial. 3 buttons. 62% Polyester/35% Cotton/3%Spandex. Machine wash. Imported. 2444492165102 34717900044 S20M1756