New Nike Men's Black Mamba aerobill Dri fit zipback hat Gray Red OSFM OSFM:Gray Red support key muscle groups and Recommended for Contact and support key muscle groups and the elbow joint while helping circulation through the fingertips EITHER THUMB: Comfortable athletic guard fits right or left thumbs for ultimate versatility STABILITY: Keep any thumb injury stabilized during daily activities and at night during sleep PROTECTION: Reduce risk of further injury with reinforced guards that enable natural movement i FIT: Adjustable fasteners provide individualized fit zipback hat zipback closure offers a comfortable fit Nike aerobill technology stays light and wicks sweat Inner band prevents moisture from slowing down the HD Graphic and embroidered logo for style