The sign accompanying the suit. It reads
The XN-13 suit displayed here was manufactured for the Navy by B.F. Goodrich
and is one of the early adaptations of the company's Mark IV pressure suit
used in the development of those worn by the Mercury astronauts. Weighing 22
lb., the Mercury suits consisted of three layers of nylon. The inner walls
were ventilated for air circulation and cooling and also prevented leakage.
The outer shell of HT-1 aluminized nylon, distinctive because of its silver
color, was flame resistant in order to protect the astronaut in the event of a
fire. It also gave America's new space pioneers a futuristic appearance.