Description:Portable Design: USB heated lunch box, easy to carry, can be powered by power bank supply, car, laptop, etc., so you can enjoy hot meals at any time.Premium Materials: The Lunch warmer is made of durable oxford cloth and waterproof aluminum foil, ensuring your food stays warm anywhere.Convenient: The food warmer heater has a handle, making it easy to carry when going out, perfect for long commutes or office lunches.Easy to Use: Food insulation bag Put your lunch box into this heated lunch box, plug in the USB cord and it will heat automatically.Size: Usb heated lunch box bag container size is about 21cmx16cmx8cm/8.27inchx6.30inchx3.15inch.Specification:Material: Oxford ClothSize Chart:21cmx16cmx8cm/8.27inchx6.30inchx3.15inchPackage Includes:1 Heated Lunch Box1USB CableNote:directly plug into USB interface(2A), avoid wet at the bottom, if bottom is wet, and dry it under the sun