The 52L Hesper is a single compartment hiking pack designed to go the distance. It's made from UTS-coated nylon for lightweight reliability, secured by a roll-top closure and detachable lid, and an additional strap runs from the base to the lid to lift loads and provide greater compression. Stretchy front and side pockets let you store bottles and snacks outside the pack, and the detachable shoulder strap fits a 500ml soft flask (not included), too. If you use a hydration bladder, you can keep it inside and thread the hose through a port at the top of the harness. The way the shoulder strap is designed means that you can keep the mouthpiece close by without it flapping as you walk. Hespers are supported by the new HeliumAir harness — our lightest to date. Its construction balances a minimal design with maximum carry capacity, and the internal frame is removable so you can cut weight and fine-tune your pack's fit to everything from day missions to thru-hikes. The hip belt can be interchanged for a different size in-store. It has two flat pockets, and the indented foam back panel doubles as a removable seat. Don't just take our word for it.