Nike Men's Element Half Zip Running Top, Black/Black, XXL polyester Dri-FIT jersey fabric moves sweat away from the body to help keep you comfortable and dry while providing a soft feel against the skin. The half-zip design adds custom comfort while mesh underarm panels increase ventilation. Thumbholes at the cuffs add coverage and help keep hands warm. Ergonomic seams to enhance range of motion Mock neck to help keep out the cold