Our leakproof rubber hot water bottle plugs are designed to ensure a tight seal, preventing any water leakage and maintaining warmth. Made from rubber, these stoppers are heat-resistant and compatible with most hot water bottles on the market. They are easy to install and remove, making daily cleaning and maintenance a breeze. These plugs effectively isolate air, keeping the water inside warm, enhancing your winter heating experience and providing comfort during cold days. Features -Color:White -Material:Rubber -Size:3.50X2.50X2.50cm/1.38X0.98X0.98in -Leakproof design: the rubber hot water bottle plug ensures a tight seal, preventing leaks and maintaining warmth for extended periods, suitable for winter hot water bottle stoppers -Hightemperature resistance: made from durable rubber material, these hot water bottle replacement stoppers withstand high temperatures, ensuring stable performance and reliability -Universal compatibility: designed to fit most hot water bags, these rubber hot water bottle caps are versatile and suitable for various models, meeting diverse user needs -Easy installation: the precise dimensions of these hot water bag lids make them simple to install and remove, allowing for effortless cleaning and maintenance -Enhanced heat retention: these leakproof rubber stoppers effectively isolate air, preserving the heat inside the hot water sack for a cozy and comfortable winter experience Package list: 12 Water Bag Stopper