USWE Roll-Top Saddle Bag A Waterproof Saddle Bag Whether you're commuting to work or you're going out for an all-day adventure, you'll want some extra storage space for your essentials. The USWE Roll-Top Saddle Bag is an extra large saddle bag with 9L of total volume so you can carry everything you need. The bag has external attachment points for lights and the bag also has an air valve to remove excess volume and compress the load. The straps go around the seat and seat post to keep it secure and vertically bounce free. Features Air valve to remove excess volume and compress the load Waterproof one-piece saddle bag that holds up to 9L of gear Weight: 380g / 13. 4oz Total volume: 9L / 304. 3oz | Uswe | Roll-Top Saddle Bag Black