Outer size:350x240x660mm Inner size:328x178x618mm Very sturdy and waterproof Nylon Oxford fabiric Removable adjustment Padded belt and shoulder straps 2 fixed pockets on the outside Load 3pcs 1/3 food pan (17.6x32.5x10cm) Use for outdoor field exercise, hot food, insulated, delivery, distribute. Our backpack will carry food supplies for one person. Compared to the insulated box, this bag is light weight, easier to assemble ,fold-able, shock resistant Standard army autumn ironwood sewing，good tensile strength The widening thickening shoulder straps and waist belt ,make it comfortable to use. When empty the bag can be stacked up, to save space。 It will take stainless steel food pans, international standards 1/1, 1/2,1/3. Please contact us for price.