Designed to provide you with a better sports bicycle experience the PRO Discover Top Tube Bag provides bike packers with an easily accessible storage solution. It features a 700-millilire capacity, a waterproof construction as well as a waterproof zipper. A cable exit port allows you to charge a GPS head-unit while riding and a bungee cord provides added storage options. The Discover Top Tube Bag attaches to your bike via two bolts or sturdy Velcro straps.Top tube bag for bike packingEasy to reach storage space700ml capacityWaterproof constructionWaterproof zipperWeight: 107gTwo-bolt or Velcro attachment optionsCable exit for charging while ridingBungee cord storage for quick access to small itemsReflective details for increased visibility