These scientifically designed graduated compression calf sleeves hve been created to optimise performance recovery & comfort. Each time you launch yourself into action on the field the road or the track your achilles calves & the front of our lower legs are forced to absorb the shock of landing. M2 Os Active Release Anti-inflammatory band reduces the impact on these areas by providing posterior & anterior support. Calf sleeves also work to prevent calf cramps & shin splints. Each sleeve features 2 reflective strips for increased safety while training in the early morning or after dark.