Old Man Mountain Atlas Rack Pack Rack Pack That Isn't Wack The Old Man Mountain Atlas Rack Pack is a sleek and secure replacement for a seat pack. It sits lower on the bike, improving your center of gravity. It allows your dropper post to move unencumbered and is locked in and stable on top of the rack of your choice. With four simple straps, it installs with ease. It features a 9-liter capacity and is made from TPU fabric with Hypalon reinforcements, fully welded seams, and a roll top enclosure, making it 100% waterproof. A crisscrossing bungee cord on top of the bag is ideal for a rain jacket or warm layer you want quick access to. Features Hypalon reinforcements at all attachment points are more abrasion-resistant and provide extra grip where needed Perfect fitment on all OMM rack decks9-liter capacity so you can carry all kinds of stuff Full welded and waterproof construction Weight: 275g | Old Man Mountain | Atlas Rack Pack Black