One of the industry's first lumbar packs, the Day is known for its function-first design. After 40+ years in our line, we've revamped this classic built with Delta Wing Compression and added more functionality for efficient storage on and off trail.

The original technical hiking lumbar pack marches on stronger than ever after 40+ years. Built with ultra-durable ripstop Nylon fabric, the Day lumbar pack is as comfortable as it is versatile. Whether you are a hiker, disc golfer, commuter, tailgater, park ranger, birder, etc. this pack has the carrying capacity for all your needs. The large main compartment has a divider big enough for a tablet, large water bottle pockets on each side can easily hold 1L bottles, the outer pouch can hold essentials for easy access, and the Delta Wing Compression System helps keep the pack close to your lower back.