Kuber Industries flask is a smart and effective way of carrying your favorite beverages while you are on the go. Thanks to its well-insulated mechanism, it can keep the beverages warm or cold for hours at a stretch. Both its interior and exterior surfaces have been fabricated using stainless steel, making it completely rust-proof. This 750ML flask also comes with a transparent plastic drinking cup. Hot drinks and cold drinks.This flask ensures vacuum insulation, thereby keeping the stored beverage warm or cold depending upon the temperature. You would, therefore, not have to worry about losing the desired temperature of the beverage even if you have it after a long time.