Best quality electric hot water bag Artificial Fur and velvet surface Automatic heat control Long lasting heat gel Pocket for hand Color and Print may vary This is a high quality hot water bag with Artificial Fur and velvet surface. Fur helps in retaining the heat for a longer time and also gradual release of heat. The problem with cheaper hot water bags is that its too hot when just heated, so you need to use towel etc to reduce the heat. This heat pad is much more comfortable to use than the cheaper bags with rexine or polyester materials. Apart from the material, the size is also slightly bigger than the cheaper bags. Hence it can provide heat to a larger area of body at a time.This design has a pocket for your hand. You can put your hand inside the pocket for keeping yourself warm during those chilling days. Plug it to an electric outlet for 3-4 minutes and its ready to be used. Remains warm for around 3-4 hours. Dimension 11"x7.5"