8.3oz. Lower body / sleeves: 100% Polyester, Dri-FIT knit. Upper body: 90% Polyester / 10% Spandex, Dri-FIT woven. Dri-FIT double knit polyester body mixed with Dri-FIT stretch woven panels for ultimate stretch and protection from the elements. ½ zip silhouette with 1X1 rib knit fold over collar. Self-fabric set on cuff with turnback hem. Twill heat transfer swoosh on left sleeve. Nike Golf embossed back neck tape.