thisInsert the product into the bag and seal with the sealing machine(also can not seal, blow out \"edge effect\" can), then, with household use  Blow air (hot air source) blowing on the film, it will naturally shrink along the surface of the object, finally, close to the surface of the product, will feel very magical oh, the effect is very good oh. You can also try it.Is a three-side sealing shrink film bag, one end of the sealing for arc edge, arc edge corresponding to the short side of the opening, specifications can be customized