The ultimate cold weather warmer, the Optimus softshell knee warmer keeps the rain away from the skin without letting you overheatKey Features:Perfectly matched with the Road Race Optimus bib shorts,Unlike other softshell garments, the Optimus warmers give huge amounts of 4-way stretch for a superb fit,The waterproof softshell fabric gives excellent warmth even when wet,Lightweight Lycra fabric behind the knee to prevent overheating,Flatlock stitching eliminates any unwanted chaffing or discomfort,Reflective details for low light visibility,Silicone printed leg grippers ensure a secure fit,Limited lifetime warranty.