Keep your drinks perfectly cold for 24 hours and warm for 12! Made of 1st class food approved stainless steel 18/8. Perfect on the go whether you have tea, coffee, lemonade or ice cold water in your bottle as it does not give off flavor. Your drinks are NOT in contact with plastic, so you should never worry about BPA, chemicals or endocrine disruptors. Each product is laboratory certified to meet or exceed LFGB (food contact grade testing). AYAIDA's products are healthy for you and our planet! BONUS: Made so it can last a lifetime - fill it, and it's 900 times better for the environment instead of buying a plastic bottle! Information: Capacity 500 ml Opening 3.6 cm Diameter 6.7 cm Height 23.5 cm Weight 290 g This bottle is made with powder coating, which means that the bottle is rougher in the surface and more hardy. For every bottle of drink sold, the AYAIDA Foundation donates 100 liters of clean water to children in need through Unicef.