Aircee TM 30L 3P Mountaineering Camping Hiking Military Waterproof Assault Pack Tactical Backpack Chest belts can adjust distance between the two shoulder straps and strengthen the stability of the backpack The waist belts which can disperse the load to the lumbar area more effectively 30L capacity,which is not big, but it has many compartments can hold lots of things, great for hiking adventures, outdoor war game activities and daily using. Withstand harsh Chest belts can adjust distance between the two shoulder straps and strengthen the stability of the backpack situation. Velcro patch can be attached on the front.