Nike Mens Shield Short Sleeve Windproof Half-Zip Lightweight Golf Jacket Grey 100% polyester Mock neck zips up to the chin to help block out the elements. Mesh-lined garment for breathable coverage. Front panel: 2.5 oz. 100% polyester zilla taffeta. Back panel and sleeves: 1.0 oz. 70% polyester 29% polyurethane composite with knit face. Side zip pockets for secure storage. Drawcord and toggle at hem for adjustability and enhanced fit. Lightweight, windproof fabric for protection on the course.