Introducing the YuYu Japanese Cotton Hot Water Bottle by Richard Yu. This bottle is so much longer than the standard square hot water bottle to keep you toasty and warm. It can also be filled up with cold water to keep your body cool. This bottle requires less than a kettle to fill up (less than 1 litre), and features cleverly designed bumps on the surface of the bottle that traps air within the fabric making it blissfully hot or cold for several hours. The YuYu Bottle is made from the finest Grade A Sri Lankan natural, biodegradable rubber. The cover comes in a vertical striped design, in a sky blue colourway, made with 100% pure Japanese cotton, including the favourite extendable YuYu strap feature. This means the YuYu can be tied around the body and worn hands-free. The YuYu Bottle makes for a beautiful gift and a stylish interior accessory.