Red slipper-shaped hot water bottle with a zipper, designed to keep your feet warm. - Color: Red - Size: M (up to 27cm) I usually wear 25cm shoes, and with slightly thick socks, the fit is just right. I bought this a few years ago and barely used it, so it's in good condition. However, please consider that it is a used item. Includes instruction manual. The warranty is expired, so it is not included. Please understand. [Manufacturer's Details Excerpt] The world's first! A new sensation hot water bottle made from wetsuit material, developed by a wetsuit specialist who is particular about materials!!! CLO'Z Soft Hot Water Bottle is made of chloroprene rubber for wetsuits with nylon jersey fabric attached. It is very soft and comfortable to the touch, and has high insulation, so it excels in heat retention.