Updated with an improved look, fit, and feel, the CEP Compression Calf Sleeves 4.0 Men's Black & White help eliminate fatigue, prevent cramping and keep you feeling fresh longer into your run. Softer fabrics offer a more comfortable feel against your skin, while new HEIQ clima-management technology rapidly removes sweat and regulates temperature to keep your legs cool and dry. Additionally, the fabric has been treated with silver to fight odor and the sleeve's anatomical left-right design maintains a secure fit for an overall enhanced running experience.