The inner tank of the kettle is made of BPA-free PE material, and the outside is wrapped with a layer of metal material, which is very strong, durable and beautiful. With adjustable waistband, it can be adjusted to the size you need, suitable for most people. Very convenient to carry and use, perfect for travel, picnics, cycling, mountain climbing, camping and other outdoor activities. It has a layer of fabric on the outside that can be printed with your logo or pattern. There are various capacities to choose from.