Lighter than calf sleeves, the 2XU Compression Calf Guards are great for training or competitions. Extremely powerful, breathable and engineered with UPF50+ sun protection your legs will definitely thank you! Product Details The 2XU Compression Calf Guards are strategically designed to be exceptionally effective for the containment of the calf muscle when training and competing. Repeated muscle vibration is directly related to causing fatigue, muscle damage and shin splints. A versatile item that allows athletes to use their preferred sock and can also be worn under a wetsuit making transition times faster during triathlon. Graduated compression to promote increased circulation for recovery Highest power denier targeted support to calf + shins Reduced fatigue in lower legs through less muscle oscillation Reduced muscle soreness Greater power output Garment Features High power PWX FLEX compression fabric with optimal breathability and flexibility supports the shin and calf muscles. Flatlock seams to reduce chafe for greater comfort. High filament yarns for dryness - wicks sweat from the skin to the fabric exterior. Antibacterial and UPF50+ sun protection. Size chart SIZE CALF GIRTH (CM) CALF GIRTH (IN) XXS 30- 33 11.75 - 13 XS 33 - 36 13 - 14 S 36 - 39 14 - 15.5 M 39 - 42 15.5 - 16.5 L 42 - 45 16.5 - 17.75 XL 45 - 48 17.75 - 19