Non-toxic,Sealable,Waterproof and Anti-oil.Made of waterproof non-woven fabric,the middle is pearl cotton,inner layer is aluminum foil.Ideal material for food to keep warm or cold The insulated structure could remain warm up to 3 hours.And remain cool up to 6 hours.Great for packing food, storing food, and taking food on the go to short distance trip Thickness 6 inches.Total capacity is up to 550 Cubic Inches.There is enough space to accommodate 10 bottles of 500ml water,4-pack coffe,or numbers of cans,fruit,snacks.The biggest square box on bottom could be contained.The round box with its diameter less than 6 inches could be loaded Ideal for Coffee,Milky Tea,Fresh Seafood,Take-away Food,Every food that requires to keep warm or cold Customize it with LOGO