Agu winter knee coveragus winter knee covers are constructed from lombardia material with a fleece lining to provide insulation they are water resistant and very comfortable to wear the top and bottom of these knee covers are equipped with silicone grippers to ensure they remain firmly in place featuresconstructed from lombardia materialfleece lininginsulating technologywater resistantsilicone grippersbuy agu clothing from chain reaction cycles the worlds largest online bike store