Race-tuned warmers engineered to the specifications of our World Tour riders for uncompromising comfort & premium finishing details. Our test riders & World Tour athletes requested some changes to our standard Spring Fall Leg Warmers. This is the result. The OSMOS Medium material is the same used in our premium winter jackets & tights & it provides better temperature regulation & durability than the RX Light material in our standard Spring Fall warmers. The RS warmers also include ankle zips so they’re easier to strip in the saddle & increased grip ensures they stay in place when you need them. 63%PA 20%EA 17%PL