Fine-Tuned Fit - Fit-on-the-Fly harness and hipbelt make for improved comfort and a fine-tuned fit. Integrated Raincover - Keeps your pack and gear dry in inclement weather. Enhanced Organization - Large, curved side zip access into main compartment on both sides. Zippered sleeping bag compartment with removable divider. Internal hydration reservoir sleeve with center back exit port. Item Dimensions: 31.5H x 15W x 12.2D in; Item Weight: 4.29lb. Fit-on-the-Fly harness and hipbelt make for improved comfort and a fine-tuned fit that you can adjust on the trail. Revolutionary AG system seamlessly extends the tensioned backpanel into the hipbelt for lightweight support. Curved zip access on each side panel, floating top lid with lash points, and fabric reinforced front shove-it pocket allow for easy-access storage. Zippered sleeping bag compartment with removable divider and removable sleeping pad straps keep your sleep system secure. Internal hydration reservoir sleeve accommodates up to a 3L reservoir (sold separately).Included waterproof raincover made with PFC/PFAS-free DWR and bluesign approved materials. For Size Medium/Large: Recommended load range: 25-35 lbs | Pack weight 4.291 lbs | Dimensions: 31.5H X 14.96W X 12.2D in | Volume = 50 Liters.