1 litre rubber hot water bottle to fit our pajama case/hot water bottle cover. Rubber Bottle ONLY Rubber hot water bottle : This product meets BS1970:2012 standards. The bottle is rubber.Disclaimer WARNING – HOT WATER BOTTLES CAN CAUSE BURNS. AVOID PROLONGED CONTACT WITH THE SKIN.- This product is recommended to be replaced every 2 years- This is not a toy – keep out of reach of children.- Do not use boiling water and only Manufactured to British Standard 1970:2006. 2 Year Manufacturer's Guarantee. Recyclable High Grade Rubber. When filling do not use boiling water, very hot water is fine but boiling water can cause splits or leaks and will shorten the life of the bottle. Do not overfill hot water bottles. Tighten carefully & take care when filling it may help to use a towel to cover the bottle when adding hot water, this will help avoid any burns. Don't use hot water bottles with electric blankets. If your bottle shows signs of wear and tear replace with a new hot water bottle.