Food grade stainless steel inside means no metallic aftertaste. BPA free lid and no plastic lining means no toxins. New double wall insulation is better insulation to keep your coffee, tea or soda hotter and colder. Travel water mug comes with a leak proof, insulated, BPA free cap. The flip-open lids are designed to release and hold, then flip open. This 2-step lid release allows condensation on the lid gasket to fall back into the mug instead of splattering. Water bottles are double-walled and vacuum insulated. Our metal water bottles have been proved to provide the best insulation for your drinks, whether cold cola or hot coffee. Hot drinks last up to 12 hours, and cold drinks up to 24 hours. Welcome to custom your logo.