Great for Cold Weather Cycling: The bike handlebar mittens are made of 3M THINSULATE cotton and thermal fleece inner, Keep your hands snug and warm without gloves, even riding in below freezing temperatures. Good Windproof Performance?The pogies have pull straps that cinch up around the cables/handlebars at the end - that keeps a lot of cold air out. The outer layer is made of windproof and splash-proof polyester. (Note: Avoid prolonged rain, the stitching is not waterproof.) They are big, and go part way up your arm, keeping cold air out of your coat sleeves. Enough Space?Easy install and keeps hands warm and your hands are free to operate brakes, gear shifter, and peddle assist on your e-bike. Makes winter commuting more bearable and safe. Humanized Design?the reflective patches and printing on the gloves greatly enhance visibility. it had the handlebar end plugs inside to secure the mittens to the end of the grip. They hold their shape during hand entry and exit. opening up the zipper they were vented sufficiently to ride in higher temperatures without getting hot. MULTY-APPLICATION: The handlebar mittens has a widely application. It could perfect fit on mountain bike, e-bike, fat bike, commter bike etc. If you have any problem, please let us know.