Nike Club Cap in Black. - size M/L (also in S/M) Nike Club Cap in Black. - size M/L (also in S/M) 100% polyester. Adjustable back strap. Front logo. Ventilating eyelets at top. Brim measures approx 2.75 in length S/M measures approx 23 in circumference. NIKR-MA82. FB5682-010. Centered around humanity and athletic innovations, Nike believes that if you have a body, you are an athlete. From footwear to an incredible variety of clothing, Nike is about enhancing performance while looking and feeling your best. Many of their shoe styles have become rare collector's items because of their limited quantity and unique, yet classic design. Their-performance focused technologies have revolutionized athletic wear, while their exclusive fabrics such as Dri-Fit, AeroReact, and Storm-Fit highlight both function and aesthetics. Beyond apparel, Nike invests in the power of people, planet, and play with practices that seek to better serve the environment and support women in the workforce.