Zensah has developed recovery leg sleeves using a special knitting process and their stretchy fabric. From the Zensah site: “The Calf/Shin recovery sleeves are made with gradient compression which provides wide ribbing in the front for shin support, and tight ribbing in the back for calf support. The sleeves are made with Zensah FabricÂ® which has silver helping regulate skin temperature, and fight bacteria. The sleeves can be worn during training to increase oxygen blood flow to the muscles of the lower leg. The more oxygen the muscles receive the faster they recover allowing athletes to push the envelope in their training. The Zensah Calf/Shin sleeve is ideal for runners, cyclists and triathletes. It can be worn during training, recovery or for traveling after races.