If you need a versatile, expandable multi-day Backpack, then you need the ALPS Mountaineering Nomad. Its innovative roll-top closure expands from a 40L Pack to a 60L Pack, so you can customize your carry weight to match your backpacking adventure. The main compartment is easily accessible using its zippered opening. 2 flat aluminum stays give it the needed rigidity to help you carry a heavy load. Its adjustable suspension system fits torso ranges from 15.5-20.5 inch to give you customized comfort. The waist belt removes, plus has removable pockets for even further customization. Stretch side pockets, side compression straps, daisy chain and trekking pole loops provide additional gear storage and lashing points. Includes hydration pocket with 2 hydration ports and built-in rain cover. Lightweight 200D nylon double ripstop fabric Roll top expands its carrying capacity from 40L to 60L Adjusts to fit torso ranges from 15.5-20.5 inch Removable padded waist belt with removable pockets Zippered access to generous-sized main compartment Dual aluminum frame stays for rigid carry Side compression straps secure the load Load lifter straps for a comfortable carry Removable sternum strap Hydration pocket for carrying water (reservoir not included) and port with outlets on both sides 2 stretch bottle pockets Extensive daisy chain attachment points Built-in rain cover protects from downpours Waist belt available in small and XL Order today!