Old Man Mountain Atlas Rack Pack

The Atlas Rack Pack is a sleek, secure, and silent alternative to a traditional seat pack. By sitting lower on the bike, it improves your center of gravity, keeps your dropper post fully functional, and mounts firmly to the rack of your choice using four simple straps. Like all OMM products, it is built to perform in any riding condition, offering stability, durability, and complete waterproof protection.

Best for

Ideal for bikepacking, long-distance touring, and riders who need reliable waterproof storage without compromising dropper post performance. Perfect for carrying extra food, layers, or gear on routes with limited resupply options.

Not ideal for

Not recommended for riders without a rear rack, or for those seeking ultralight setups that avoid rack-based systems entirely.

Benefits

The Atlas Rack Pack offers 100% waterproof protection thanks to its TPU fabric construction, Hypalon reinforcements, fully welded seams, and roll-top closure. Its 9‑liter capacity provides ample room for essentials, while the quick‑stash bungee straps on top allow fast access to layers or snacks. The tapered front improves seat clearance, making it dropper‑compatible, and all contact points are designed to remain silent and secure over rough terrain.

Technical Specs

• Capacity: 9 liters • Construction: Fully welded, waterproof TPU with Hypalon reinforcements • Closure: Roll‑top design • Weight: 275 g • Compatibility: Fits all OMM rack decks • Features: Silent contact points, quick‑locking buckles, top bungee for fast access • Materials: PFAS/PFC‑free