Serfas Super Light Bag velcro Carry everything you need for your next bike ride Check out one of our expandable bags to accommodate an extra tube or a bigger Multi-tool Our secure zipper closures give you the Peace of mind that what you put in your bag will be there when you need it Lightweight EVA Foam Material Safety Whisltle Zipper pull Reflective piping for added visibility Easy installation with velcro strap system Internal pockets with key fob