Available in 3 liter or 4 liter sizes the H2Pro Frame Bag is designed to store bulky items within the bike framewithout altering the bikes center of gravity or handling characteristics. Constructed with our all-new H2Tex three-layerwaterproof fabric and a high-quality water and dust proof zipper, the H2Pro Frame Bag features a hidden port that allows you discrete access to the bag for charging batteries or connecting to a hydration bag.Key Features:Giant-exclusive H2Tex 3-layer waterproof materialHidden port design, perfect for charging cables or hydration hosesInterior storage pocket helps keep contents organized and in placeHigh-Quality water/dust proof zipperMaterial: H2Tex three-layer waterproof fabricColors: BlackSize: 43.5 x 6 x 11.5cm (3L), 46.5 x 6 x 13cm (4L)Volume: 3L, 4L