<!--ProdInc[300295510]/Mall:[backcountry_US]-->To optimize weight and comfort for our longest through-hikes, Osprey fine-tuned the Exos to make the Exos Pro 55L Backpack. This ultralight design sheds nearly a pound off the original and a few more ounces when the lid is removed. Supportive details from the inside out allow us to manage a weeks load and adjust capacity, balance, and organization as needed. <h3>Details</h3> Optimized and ultralight through-hiking backpack 55-liter capacity can hold up to 30 pounds of equipment Tensioned mesh back panel lifts load for better airflow and load balance ExoForm harness and hip belt use EVA foam for dynamic fit and padding Removable lid sheds weight and reduces capacity for lighter trips FlapJacket covers top access when lid is removed Internal and external compression straps stabilize load Webbing lash points, compression pockets, and ice axe loops secure additional equipment Item #OSPZ1GA <h3>Tech Specs</h3> Responsible Collection : [accent, bottom] bluesignA 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 <img src=https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=backcountry&ProdInc=300295510&MallIDEncodeYes=0&SiteName=PostSelf width=100px height=20px>