Introducing the Slim Top Tube Pack: at just 4cm wide, this bento-style top tube bag cuts wind resistance and avoids leg strikes, so you can stay focused during the most grueling efforts. You can access your gear through the smooth-opening, waterproof YKK zipper and for charging devices, there's a cable access port on the side. Built for stability, it stays firmly in place and keeps your setup tidy through any terrain or weather.