Finally a flask online, that is so slim and compact, that you will have no trouble accommodating it in the side pocket of your bag! Bring home the Milton Thermosteel Optima Flask and experience great functionality, like never before. With a great capacity of 750 ml, this stainless steel flask allows you to carry your favourite drink and promises to keep them perfectly hot, or even chilling cold for as long as 24 hours. The copper coating offered with this flask ensures better heat retention, while the 100% rust free steel promises great durability. As an add on feature this flask comes with a small compartment for storing your medicines or sugar cubes, just in case you’d need them with your choice of juice, milk or water!