- Flask The Super Smooth Water Bottle Finished / Rubber Paint that you wont want to stop feeling, Fashion Style to take your bottle everywhere. Matches the way you dress in your day to day, to always be prepared and hydrated in business meetings, interviews, visit to clients and appointments. Versatil Design that will make you Look Good and Classy at the GYM or in your outdoor activities. - Flask double wall insulated Stainless Steel Bottle that keeps the temperature of your drinks for longer. The liquid will remain Hot for up to 12 hours and Cool for up to 24 hours. - Premium Stainless Steel Ref.304. This special material is 100% PBA free, which makes Flask a non-toxic bottle and does not leave a metal taste in the drinks stored inside.Flask "The fashion way, to stay hydrated"