Made of stainless steel, silicone and plastic cover. Capacity: 0.4 liters. BPA free. Its leak-proof sealing technology with hermetic screw and its double wall with intermediate vacuum allow the temperature of both cold and hot liquids to be preserved for a long period of time (approximately 12 hours). Removable cover for easy cleaning, silicone coating for a comfortable grip and base with non-slip rubber. This reusable cup is perfect for replacing disposable plastic bottles, also helping to improve the environment.