New McDavid Calf Sleeves, Black, 2 (Pair) Antimicrobial technology Small White Yellow Black Synthetic Mesh A textile upper Black Purple Gold Synthetic Mesh A textile upper Rip on the seam at the bottom near the zipper 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 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