Stay dry and comfortable with Nike Dry fabric Adaptable coverage with the 1/2-zip design Breathability - zoned mesh Ergonomic thumbholes Structured collar Run for miles with the comfort of Nike's Dry Element Long Sleeve Running Top Engineered for your run, this long sleeve top features mesh panels for breathability, ergonomic thumbholes and reflective elements. Ergonomic thumbholes follow the shape of your hand for comfort, helping keep the sleeve cuffs in place when they are pulled down over your hands. The collar is structured to stay in place and help lock in warmth.