Features 100% Nylon Imported Military spec design allows for attachment of additional pockets (1015 and 1016) 2 bottom adjustable straps for attachment of yoga mat or sleeping bag 2 side fully adjustable tabs for attaching accessories Mesh padded shoulder straps with d rings 15 inch laptop compartment with zippered mesh pocket Description This is definitely not your traditional backpack the fort Hamilton backpack is truly a hiker's best friend. No matter what you are doing, or where you are going, this bag really shows off its survival kit skills. Whether you need to carry a sleeping bag, water bottle, flashlights or more, the fort Hamilton is the backpack for you. Hey, you never know what mountain you may come across.