Exos Pro 55L Backpack

Why We Like The Osprey Exos Pro 55L Backpack

To optimize weight and comfort for our longest through-hikes, Osprey fine-tuned the Exos to create the Exos Pro 55L Backpack. This backpack is designed with ultralightness in mind, shedding nearly a pound off the original weight and even more when the lid is removed. From the inside out, this backpack offers supportive features that allow us to manage a week's load and adjust capacity, balance, and organization as needed.

Osprey's comfort-focused carrying system starts with their AirSpeed suspension. The tensioned-mesh back panel provides a supportive fit and ample space for cool airflow on long hikes. The lumbar area is enhanced with a silicone print that helps the hip belt grip more steadily, so the foam belt can stretch and move with our hips without slipping. The spacer mesh shoulder straps are also ventilated, ensuring airflow all around our torsos.

Details

• An optimized and ultralight backpack specifically designed for through-hiking
• With a 55-liter capacity, it can hold up to 30 pounds of equipment
• The tensioned mesh back panel lifts the load, enhancing airflow and load balance
• The ExoForm harness and hip belt use EVA foam for a dynamic fit and extra padding
• The removable lid reduces weight and capacity for lighter trips
• The FlapJacket covers the top access when the lid is removed
• Internal and external compression straps stabilize the load
• Webbing lash points, compression pockets, and ice axe loops secure additional equipment

Responsible Collection [accent, bottom]

bluesign® APPROVED, Recycled/Repurposed Material [face fabric] NanoFly (100D nylon x 200D UHMWPE), PFAS-free DWR treatment,

[accent] 210D recycled high-tenacity nylon, PFAS-free DWR treatment,

[bottom] NanoFly (100D nylon x 200D UHMWPE), PFAS-free DWR treatment

Volume [small/medium] (with top lid) 55L (3356cu in), (without top lid) 46L (2807cu in),

[large/x-large] (with top lid) 58L (3539cu in), (without top lid) 49L (2990cu in)

Support/Suspension AirSpeed (injection-molded ladder), LightWire frame, 3D-tensioned mesh back panel, silicone lumbar print

Shoulder Straps ExoForm (reverse spacer mesh, die-cut EVA, 3D mesh), adjustable sternum strap (with whistle buckle)

Waist Belt EVA foam

Hydration Compatible yes, internal hydration sleeve (with hose port and Osprey Hydraclip)

Reservoir Included no

Access top

Pockets 1 zippered lid (removable), 1 compression front, 2 dual-access stretch mesh side, 1 zippered hip belt, 1 drop-in hip belt

Gear Loops multiple front panel lash points

Ice Axe Carry 2 attachment points

Compression dual side straps, internal straps

Weight Capacity 10 - 30lb

Dimensions [small/medium] 28.35 x 3 x 12.2in, [large/x-large] 30.31 x 14.96 x 12.2in

Claimed Weight [small/medium] (with top lid) 2lb 1.2oz, (without top lid) 1lb 14.6oz, [large/x-large] (with top lid) 2lb 2.6oz, (without top lid) 2lb

Activity backpacking, ultralight backpacking

Manufacturer Warranty lifetime