Zoot Performance CompressRx Calf Sleeve feetures CRx graduated compression that puts maximum compression at the ankle and less as you go up the calf. The sleeves use BIOwrap body specific patterning that stabilizes the muscles, reducing damage caused by vibration and increasing muscle endurance and performance. Teksheen fabric provides an engineered stretch with maximum muscle stabilization. SeamLink is a dynamic seam that stretches as much as the fabric it joins to. Topical antimicrobial fights odor.