Both stylish and functional. Made of stainless steel and insulated to keep your drinks COLD for 24hrs and HOT for 12 hrs! The S'ip bottle was created so you can quench your thirst from dawn till dusk, S'ipping on refreshments has never been easier. Composed of double-walled, insulated 18/8 stinless steel, this bottle is built to keep your favorite drink at your preferred temperature.