Osprey - Thrulite Pro 55 Expedition Backpack

Built for ultralight thru-hikes, this ultralightweight pack pairs an adjustable torso, vest inspired harness and ventilated AirScape backpanel with secure roll top access and a removable, multi-function lid.

An uncompromising ultralight thru‑hiking pack built for longer, more committing trips—honed for efficiency, comfort and stability over big days and tough terrain. A roll-top closure pairs with a removable modular top lid that converts into a chest rig. NanoFly™ fabrics, dynamic suspension, a vest-style harness and an adjustable torso length deliver a precise fit and confidence mile after mile.