Allen Terrain Rock Canyon External Backpack Frame - The Rock Canyon External Pack Frame from Allen is a lightweight, yet heavy-duty, sturdy aluminum frame that allows you to pack out your gear or harvest with ease. The frame is adjustable from 33in to 36in for increased load capacity, the bottom folding shelf gives you extra support when needed but folds flat for easy storage, and the exterior lashing points quickly secure heavy loads. The contoured frame rests naturally on your back, and the dense foam padded waist belt and shoulder straps with cool mesh backing, plus the chest strap, helps keep you comfortable. The pack also features a mesh back support panel for added stability. Features • Lightweight, Yet Heavy-Duty, Sturdy Aluminum Frame • Frame Is Adjustable From 33in To 36in • Bottom Folding Shelf Gives You Extra Support • Dense Foam Padded Waist Belt and Shoulder Straps