Compressport r2 race recovery calf guards the compressport r2 was the number one calf guard worn at the ironman world championships in kona the compressport r2 calf guard boosts your venous return reducing the accumulation of toxins while increasing oxygenation to the muscles the reduction in lactic acid build up coupled with its shock absorption properties protects you from muscular fatigue and damage compressport compression products are meant for all levels and abilities and are suitable