The Aether Plus 85 blazes the trail for those in search of a customizable, perfect-fitting pack. One of Osprey&';s largest volume packs with a stronger LightWire frame, this pack offers a stable carry that can manage the heaviest of loads. Dial in the perfect fit with a Custom Fit-On-The-Fly Hipbelt and Shoulder Strap and detach the top lid to use as a daypack for side trips. Constructed with high quality bluesignA(R)-approved high-tenacity nylon and PFC-free DWR. Features Removable top lid converts to DayLid daypack Included raincover made with PFC-free DWR and bluesignA(R)-approved materials Stow-on-the-Go trekking pole attachment Floating top lid with lash points Integrated FlapJacket cover for lidless use Dual front panel zippered pockets for easy-access storage Large front panel zip access to main compartment Fabric reinforced front shove-it pocket Large dual-access stretch mesh side water bottle pockets Dual upper/lower side compression straps Dual front panel compression straps with StraightJacket compression Dual zippered hipbelt pockets Dual ice axe loops with bungee tie-offs Zippered sleeping bag compartment with removable divider Removable sleeping pad straps Internal hydration reservoir sleeve Carry Information ENHANCED LOAD TRANSFER: The Custom Fit-on-the-Fly Hipbelt integrates the LightWire frame into the adjustment system-creating a better distribution of weight and, in turn, a better carry. CUSTOM FIT-ON-THE-FLY HIPBELT: Crossbody ErgoPull hipbelt pulls weight into lumbar when hipbelt is tightened. Incremental length and angle adjustments allow for a fine-tuned fit and Extendible Custom Fit-on-the-Fly Hipbelt offers a precise fit for varying waist sizes CUSTOM FIT-ON-THE-FLY SHOULDER STRAP: Custom Fit-on-the-Fly Shoulder Straps allow for a precise shoulder wrap and fit. Spacer mesh fabric provides a soft and comfortable contact surface. AIRSCAPE BACKPANEL: Injection-molded, die-cut foam AirScape(TM) framesheet maintains comfortable back contact with ventilated airflow channels and maximum stability for carrying heavy loads. Mesh-covered foam lumbar for supportive, lightweight and comfortable contact surfaces. Specs Load range: 40-70 lbs Weight: 5.965lbs (S/M), 6.229lbs (L/XL) Product Video