Francfranc Cover-Included Hot Water Bottle Color: Gray For warming up your futon before bed or for relaxation time. Cover Size: W190 x H270mm Hot Water Bottle Capacity: Approximately 750ml Actual Water Amount: Approximately 500ml I received this as a gift, but I didn't use it. *The box is damaged. There is a tear in the lid (repaired with cellophane tape), dents on the main body, etc.