NIKE Women's Dri-FIT Knit Long Sleeve Half Zip Running Shirt 588534-660 Dri-Fit 56% polyester / 44% nylon Machine Wash Mesh side and back panels promote air flow for breathability Flat-seam construction reduces chafing on sensitive areas Moisture-wicking Dri-FIT fabric pulls sweat away from the skin to keep you cool and dry Cuffs have thumbholes for a secure fit that stays in place Mock neck zips up to the chin for extra protection and warmth