The cube blackline knee warmers knee warmers are sweet to have if you arenrsquot sure what the weather is doing their functional fabric and the windproof patch on the knee help keep your sensitive joints nice and toasty the preformed cut and the elasticated silicone hems on the thigh are a couple of additional details that keep you comfortable cube blackline knee warmers features warming and quick drying fabric silicone tape on upper hem wind protection pad on knees