Most of the materials of commercially available thermal insulation lunch bags are made of plastic. We designed this thermal insulation lunch box special for thermal insulation lunch box, which uses cotton and linen cloth, cotton spreading and double-layer tin foil insulation layer That's it), the whole is the concept of adding a layer of quilt to the bento box and adding heat. The zipper at the mouth of the bag is fixed by a bracket, the opening is square, and the inner foil pocket is movable. It needs to be put in when it needs to be insulated. The appearance looks like a cute doctor's gold bag! This section is suitable for older children or adults. When tightening the zipper, close the mouth of the bag first, and then follow the bracket around a ㄇ shape. / Size / internal space about 25cmx15cmx bottom 20cm high (bag height about 26cm), strap length 36cm In order to prevent the thermal insulation tank from toppling over, it has intimate strap design, which can fix the thermal insulation tank with a diameter of 9 ~ 12cm. There are 2 pockets in the bag to store small things. / Material / In the selection of materials, we hope that the less the material of the bento bag, the better the plastic, so the following materials are used: 100% cotton and linen table cloth, polyester cotton spread cotton, double tin foil bubble cloth, cotton blended lining , Cotton blended handle, YKK zipper, bracket mouth gold / Use and maintenance methods / Please wash by hand, machine wash may cause deformation.