The in-suit drink bag (IDB) is a sealed bag that comes in two sizes, holding 21 oz. and 32 oz. of potable (drinking) water. The bag is secured by velcro to the inside front of the Hard Upper Torso Assembly. Water is readily accessible to the astronaut through a mouthpiece located at the top of the bag.
NASA transferred the drink bag to the Museum after the end of the Space Shuttle program.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.