Mountain Hardwear's Camp 4 21 Backpack was designed to take you on sunrise hikes and get you to your early morning classes on time. This pack is durable enough to hold up on rocky scrambles and secure enough to carry your laptop. The laptop compartment fits laptops up to 15" and serves double-duty on hikes (it has a universal buckle for hydration compatibility). Keep your keys safe with the key clip in the main compartment and keep other small valuables secure in the top zip pocket. A side bottle pocket is adjustable to keep you hydrated on the trail and your commute. The back panel and shoulder straps are wicking to help keep you dry and comfortable on those warmer days.