Hot water bottle *natural rubber *material:rubber *size:500ml,750ml,1000ml, 1500ml,2000ml,2500m Hot water bottle with covercolor:red,blue,green,pink,black....with or without coversize:450ml,750ml,1000ml,1500ml,2000ml,2500ml ......WITH COVER TYPE 1WITH COVER TYPE 2 With Cover hot water bottle