The Stealth Pocket is perfect for holding the essentials and it actually reduces drag caused by stem and headset spacers. Features: Mounts to bikes with top tube bosses Non-slip surfaces underneath and on the front of the bag reduces bag movement Non-slip rubber zipper pull for easy one-hand operation Silver colored interior makes it easy to find contents and features a stretch mesh pocket small items Four outside pockets quickly stash salt, electrolytes, pain tablets or empty nutrition wrappers Specifications: Pack Type: Top Tube Bag Pack Capacity: 0.4L (0.33L Inside, 0.07L External Pockets) Mount: Top Tube Bosses (Requires Frame w/ Mounts) Waterproof: No Material: Nylon Dimensions: 8.4 x 2.5 x 1.5 (Length x Height x Width) Color: Black Weight: 70g