Dri-FIT jersey fabric moves sweat away from the body to keep you comfortable and dry while providing a soft feel against the skin. Half-zip design adds custom comfort, while mesh underarm panels increase ventilation. Thumbholes at the cuffs add coverage and help keep your hands warm. Ergonomic seams to enhance range of motion. Mock neck to help keep out the cold. Spandex for better range of motion and a comfortable stretch fit. Reflective loop at upper back to keep media-player cords out of the way. Dri-FIT® 88% polyester/12% spandex. Imported.