The Nike Pro Core Compression T-Shirt: Body-Mapping Fit.Dri-FIT fabric used to wick away sweat and help to keep you dry and comfortable. Flat seam help minimise irritation and chafing making a more comfortable experience. The top is machine washable for ease and convenience.Dri-FIT fabric to wick away sweat and help keep you dry and comfortableRib crew neck with interior taping for comfortFlat-seams to help minimize irritation due to chafingReflective elements at front and back for visibility in low lightFabric: Dri-FIT 90% Polyester / 10% SpandexMachine wash