Built for intense activity in the heat, this innovative boys tee shirt features the industry's leading cooling technology on the chest and center back for instant, prolonged cooling. Sweat-wicking fabric in the high sweat zones at the sides, underarms and shoulders pulls moisture away from the skin where you need it most, creating the ultimate hybrid of coolness and dry-wearing comfort. Center Back Length: 19 in. Fabric: Shell: 100% Polyester.Columbia