Rubber Hot Water Bottle With Cover Made of natural rubber Resistant to boiling water 100% leak proof Keep warm in winter Detailed ... as copperVol / size300ml – 2000mlFeature1, First grade natural rubber hot water bottle,2, Resistant to boiling water; 3, 100% leak proof4, Seamless moldedRubber content28 ... the bag Inner, especially rigid and sharp things. Rubber Hot Water Bottle With Cover