Osprey Exos Pro 55: Ultralight Thru-Hike Backpack
The Osprey Exos Pro 55 is the lightest, most comfortable ultralight thru-hike backpack from Osprey, engineered for fast, long-distance travel. Weighing just 2.08 pounds, it sheds nearly a pound compared to the Exos 58, making it an ideal choice for thru-hikers and ultralight backpackers who prioritize weight without sacrificing ventilation or adjustability.
AirSpeed Suspension for Maximum Airflow
The tensioned mesh backpanel keeps weight off your back, allowing air to flow freely across your body to reduce sweating and improve comfort on hot, strenuous climbs. This highly ventilated system is a game-changer for those long days on the trail.
Volume Flexibility and Removable Lid
Compression straps and a removable lid let you adjust carrying capacity from 45 to 55 liters. Remove the lid to shed 2.6 oz and use the integrated FlapJacket to secure the main opening, providing weather protection and load stability without the extra weight.
Ample Storage and Hydration Ready
A large front fabric compression pocket with stretch side panels accommodates overloads, while the internal hydration sleeve with center back hose port and Osprey Hydraclip makes hydration access simple. Whether you're on the Appalachian Trail or the Pacific Crest Trail, the Exos Pro 55 delivers reliable performance.
Fit and Sizing
The Exos Pro 55 is available in S/M and M/L sizes, with an adjustable torso range to ensure a precise, comfortable fit for men. Its streamlined design and durable construction make it a top choice for serious backpackers.