Tactical and military backpacks, depending on mission and situation, are larger than normal backpacks, usually produced in the 60+ liter range. Resistant to water and abrasion, all accessories used in the backpacks have high strength. Generally, all the bags have sternum and waist straps that will lighten the weight burden of the soldiers. Most military and tactical backpack are produced together with hydration- pack system compartments or interior compartments so that the person carrying the bag can continue to drink water while on the move. Tactical and military backpacks are also highly preferred with their stability and availability by hunters, mountaineers and campers who make trekking and civilian activities in outdoor.