The Constellation Space Suit System, or CSSS, is the first new suit since the shuttle "jet pack" of the 1970s. It will come in two configurations: one that the astronauts will wear inside the spaceship during launch, landing and any spacewalks needed for emergency repairs en route to the moon; and a second configuration designed to be worn on the moon's surface. The two suits will share many components—such as boots, legs, gloves, and cooling and communication systems.

NASA