RVCA Arm Covers M Arm covers made with a stretchy nylon blend material. They support ease of movement during running and surfing, while protecting your skin from the strong summer sun. The simple design features subtle RVCA logos and statement logos for an understated accent. ■Material: 90% Nylon, 10% Polyurethane Size (Measured flat) Total Length: 39cm Hem Width: Top 12cm, Bottom 9cm Please allow for slight variations.