Nike Pro Therma-Light crewneck top is a lightweight thermal baselayer solution that provides year-round comfort and performance for high intensity outdoor aerobic athletes. It fits close to the body, trapping air to help keep you warm. Drop needle polyester has a soft feel and is highly breathable. Jersey underarm gussets add durability. Flatlocked seams help reduce chafing and are designed for movement. Dri-FIT® fabric helps wick moisture away. Swoosh design trademark at the left upper chest. 100% Dri-FIT® polyester. Imported.