X-Frame carbon fiber stays are contoured to the shape of the back and transfer load weight to the waist for comfortable carrying support Top-loading pack has a mesh pocket in lid for stashing small essentials such as maps, energy bars, sunglasses and sunblock Removable lid doubles as a lumbar pack for shorts hikes away from basecamp Front access to main compartment is behind the large front zippered pocket, which has a mesh divider to keep small items within easy reach Features an adjustable torso length and interchangeable hipbelt to accommodate a variety of sizes Hipbelt fit zone automatically adjusts to the body, creating a customized fit Dual-density padded shoulder straps feature an adjustable sternum strap with integrated whistle Load lifter straps pull directly from the top of the stays, allowing minor fit adjustments; strap angle is adjustable Bottom zippered compartment with a divider separates gear from sleeping bag Internal pocket holds hydration reservoir (sold separately) for hands-free drinking on the trail Cranial cavity creates a space for full head mobility Compression straps, trekking pole loops, front X-bungee and tool loops let you secure extra gear outside Twin side water bottle pockets; right pocket canted for easy access