Double Vacuum Internal Design --- High quality durable stainless steel is used inside and outside, with excellent temperature control and long term durability. Leak Proof & Easy To Open --- The two container trays are both equipped with a leak-proof sealing lid, spills or smells in your bag, as well as keeping food fresh and tasty. Keep Food Warm Design --- Keep food temperature and better taste, produce the best insulation effect, suitable for long term storage. Wide Applications --- Perfect for kids to go to school, adults to work, exercising, camping trips and outdoor activities. Stainless steel food jars are also great gift options. Guarantee --- If you have any issue with our Product, please feel free to contact us with your JENNGAOO product, get in touch with us for a replacement or refund. We will provide friendly, easy-to-reach support.