Top-loading main compartment with padded 3D suspension contouring promotes ventilation and upper body mobility Upper and lower side compression straps reduce bulk and stabilize the load for optimal weight distribution and carrying comfort LightWire™ peripheral frame connects the upper load lifters and the central core of the pack to the hipbelt to spread the load Anti-Gravity ventilated mesh back panel contours automatically to the body, distributing weight and providing an outstanding fit Adjustable harness and Fit-on-the-Fly™ hipbelt allow you to fine-tune the fit for maximum comfort Removable floating top lid contains 2 zippered pockets with web attachment points Integrated FlapJacket™ protects contents from foul weather and rain during lidless use Zippered hipbelt pockets and dual-access stretch mesh side pockets with InsideOut™ compression straps Pack exterior also features front stretch mesh pocket, 2 ice tool loops and Stow-on-the-Go™ trekking pole attachment Hydration sleeve accommodates reservoirs up to 3L (sold separately) Dimensions: 33x16x15 inches Size: WXS/S Note: somehow there is a lighten spot on the hidden inside top part of the pack. No idea how that got there as this pack has never seen the day of light or been used. See last photo. 😂 I hand spot treated it, it’s barely noticeable. Price reflects and is firm.