Ducts on the inner surface of the suit direct oxygen to the helmet for breathing and defogging and also permit flow over the body for cooling. An electrical harness in the suit connects communications and biomedical equipment to either the spacecraft or the portable life support system. The right wrist of the torso limb suit contains a pressure gauge and the left wrist a pressure relief valve which opens to relieve suit pressure of more than 5.5 psi. The integrated thermal meteoroid garment is a many- layered structure laced to the torso limb suit. It is composed of an inner and outer shell of Beta cloth, seven layers of aluminized Kapton film separated by six layers of Beta Marquisette, and a liner of two layers of Neoprene-coated nylon Ripstop.
R also is used to protect the garment's boot from abrasion.
The boot is attached to the space suit boot by Ioop tape. Covers are provided for the shoulder cable disconnect, LM restraints, the entrance slide, and the urine transfer fitting-medical injection area. In addition, there are strap-on pockets for both legs. The shell is bonded to the neck ring, which fits into and locks with a similar neck ring on the torso limb suit. The helmet also contains a feed port and a vent pad.