The Battlepack Pro is our largest backpack. Originally designed for Mixed Martial Artists that needed a versatile on the go option but works great for all activities and travel (meets most airline carry on requirements). It has plenty of room to carry all of your gear plus various internal and external pockets to keep things in order. Made from Hemp canvas which is naturally anti-microbial, breathable, durable, and environmentally friendly. The new version features a totally removable hip belt, more comfortable shoulder straps and extra reinforcements for seriously long term durability.