1810 304 Stainless Steel Made of highquality 304 stainless steel materials with excellent corrosion and oxidation resistance this lunch box is designed to keep your food warm for several hours letting you enjoy delicious homemade meals even when youre away from homerecommended age over 12 years 3Layer thermal lunch bag The lunch bag adopts sratchresistant oxford cloth as surface moistureproof and thermal pearl cotton as padding and smooth aluminum foil as liner extending thermal time to 1h longer 100 Leakproof With separate lid for each container your lunch would never get mixed Roud upgraded silicone ring is applied to each lid and spiral seal instead of buckle seal makes it entirely airtight and leakproof Open the vent valve to make it easier to open and tighten the lid Easy to carry With fairish size and weight you can put the lunch box into your bag easy to open and close with less effort and easy to clean Suitable for adults to work exercise camping and traveland it also MICROWAVE FREEZER DISHWASHER SAFE Induction Cooker Microwave Safe Removable design The lunch box is safe for microwave heating Refer to the operation method in the picture At the same time the stainless steel inner layer can also be taken out separately for induction cooker heating Pay attention to prevent burns Multiple heating methods ensure that you can enjoy delicious food anytime