Stainless Steel Insulated Lunch Box Stacking Food Containers Description: Temperature insulation, multi-layer insulation can keep your food warm for 2-3 hours. The outer layer is made of PP plastic with a sealing ring and the latest square buckle for buttons. The weight of the buckle can reach 10KG, which reduces the damage during transportation. Leak-proof and spill-proof, each stackable insulating compartment is sealed with heavy silicone to lock freshness, leakage and odor. Note that the layers are tightly connected to prevent leakage and spillover. After several uses, it will become smooth. Material: 304 stainless steel / PP Capacity: 700ml per layer Size: 15cm in diameter Package Includes: 1 Piece Thermal Lunch Box Leak-proof and spill-proof, each stackable insulating compartment is sealed with heavy silicone to lock freshness, leakage and odor. Note that the layers are tightly connected to prevent leakage and spillover. After several uses, it will become smooth. The outer layer is made of PP plastic with a sealing ring and the latest square buckle for buttons. The weight of the buckle can reach 10KG, which reduces the damage during transportation. Material: 304 stainless steel / PP 1 Piece Thermal Lunch Box Temperature insulation, multi-layer insulation can keep your food warm for 2-3 hours.