Hot water bottle bags can be filled with hot water and sealed with a stopper can be carried and provide warmth. Available in any colors.Your logo is available by silk screen printing and transfer printing all over the surface.Packaging:1. One pc in a oppbag.2. One pc with a color peper packing card in a oppbag. 3. One pc with your own design of knitting bag cover.4. One pc with your own design of polar fleece bag cover.