... cover3, Coral fleece cover4, Polar fleece5, Short/long-pile velour6, Plush toy cover, etc.MOQ3000pcsStyleHeart-shaped/rectangular, etcCustomized colors and designs ... 3. The products after 100%pressure leak detection test.The hot water bag is made of by Natural Rubber material, also can with ... .7) Do not place anything on top of the bag Inner, especially rigid and sharp things. Durable Hot Water Bag