warmth for cool runs. the nike element half-zip women's running top combines sweat-wicking fabric, stretchy elastane and optimal coverage to help keep you comfortable on cooler days.. stay dry. dri-fit knit fabric moves sweat away from the body to help keep you comfortable and dry.. comfort. the half-zip design adds custom comfort while mesh underarm panels increase ventilation.. range of motion. ergonomic, flat seams enhance range of motion and help reduce irritation caused by chafing.. more benefits. 360-degree reflectivity for enhanced visibility in low light. thumbholes at the cuffs to add coverage and help keep hands warm. ergonomic seams to enhance range of motion. mock neck to help keep out the cold. elastane for better range of motion and a comfortable stretch fit. cord-management loop at upper back to keep media-player cords out of the way. product details. fabric: dri-fit 89% polyester/11% elastane. machine wash.