Search for: Calf Sleeve Neoprene sleeve is anatomically contoured to provide uniform compression and warmth. Part Number Size Calf Circumference 504112 X - Small 12 - 13" 504113 Small 13 - 14" 504114 Medium 14 - 15" 504115 Large 15 - 17" 504116 X - Large 17 - 19"