The Nike Dri-FIT top is back with a vengeance. The new sleeves feature a window for easy viewing of your watch. This product is made with at least 75% recycled polyester fiber. Dri-FIT technology keeps you dry and comfortable. Revamped sleeves and cuffs include a window for easy viewing of your watch and mileage. Thumbholes provide extra protection for your hands. The invisible pocket on the left side holds a key or card. Dri-FIT technology keeps you dry and comfortable.