NIKE New Men's Hyperwarm Dri-Fit Fitted Mock 2.0 Imported Dri-FIT fabric to wick away sweat and help keep you dry and comfortable Thermal fabric to help keep you warm in colder conditions Rib crew neck with interior taping for comfort and durability Flat seams to help minimize irritation from chafing Ergonomic seams shape to the body for a more comfortable fit