The Giro Thermal Knee Warmer protects your knees while riding thanks to super-warm Roubaix Fabric. The 2-panel fit is designed to move well throughout your pedal stroke while not bunching up behind your knee. Silicone thigh grippers are found on top of the warmer to keep them comfortably in place as you ride. The Giro Thermal Knee Warmer is lightweight yet provides incredible warmth when you need it most. The best part about these warmers is if the temperatures rise you can easily pack them away in a jersey pocket. The warmers are offered in sizes SM-LG, please refer to the attached sizing chart to help determine the best fit for you.