Come and see our amazing products. lunch backpack cooler bag, material:600D polyester+ silk cotton Aluminum foil. Size:8 1/4*4 5/16*2inch. we have more shape base on your Request. The bag leakproof PEVA liner retains drinks/food cold or hot for many hours and anti-leaking. The interior lining is made of excellent food-grade material and easy to clean.that is goods for outdoor, traveling and so on. Pls confirm further with us if any query about packing info, inventory status and time schedule.