Nike AeroReact Hybrid Half-Zip Women's, Black, Size S, 16792913. Stay warm, run cool. : The Nike AeroReact Hybrid Half-Zip Women's Running Top offers premium comfort for your run, combining AeroReact technology that helps maintain your optimal temperature and woven overlays that help protect you from the wind., Adaptive breathability : Nike AeroReact fabric uses fibres that open to increase airflow when you sweat and close when you cool down, providing adaptable, breathable performance to stay cool, dry and comfortable from start to finish., Freedom to Move , Articulated seams map the natural contours of your body for great range of motion so you can move freely., Secure fit : Thumbholes at the cuffs help keep the sleeves in place and provide added warmth., More details : Mock neck and dropped back hem enhance coverage, Reflective elements enhance visibility in low light, Small hip pocket provides convenient storage, Fabric: Body: Dri-FIT 92% polyester 8% nylon. Overlays: 80% nylon 20% elastane., Machine wash, Imported: .