Made of double layer of high quality 304 stainless steel, it will keep your drinks cold for up to 24 hours and hot for up to 12 hours. Ideal for traveling, hiking, cycling or to take to school or the office. It has a capacity of 500ML and its cap is leak-proof thanks to the food grade silicone gasket that it incorporates. It is ideal for daily use. It does not add or retain odors or flavors. Ecological: The BBO14 Irisana bottle is reusable, avoids the use of plastic bottles and protects the environment. Free of BPA, Phthalates, PVC and other toxins Dishwasher safe