New McDavid Calf Sleeves, Black, 2 (Pair) Antimicrobial technology Small also has a crack in it. this Louisville Slugger Omaha Classic Lavender this Louisville Slugger Omaha Classic Adult BESR Basebal bat Multi layered lining 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