New McDavid Calf Sleeves, Black, 2 (Pair) Antimicrobial technology Small White Yellow Black your swings will be lighter GMP 7100D RHT 12.75 In Blk Brn your swings will be lighter "Wave Bone" traction pattern provides multi directional flexibility Designed to stabilize and reduce fatigue to lower leg muscles hDc Moisture Management Technology keeps calves and feet cool and dry Specialty yarn makes the sleeves dry quick Antimicrobial technology Suggested wear time: 4 hours max or for duration or game run Calves benefit from increased blood circulation due to Targeted Compression Technology HDc Moisture Management Technology is all about cool and dry Suggested wear time: maximum of 4 hours or length of game run