Jim Irwin's bio-belt assembly, measuring 11˝ x 6.75˝ overall, with a parts tag to upper loop reading: “Bio-Belt Assembly, Mfg. by Atlas Underwear Corp., P/N SEB 13100084–202, S/N 1157, January 69.” The bio-belt consists of a pouch constructed of a canvas base with Teflon-coated Beta-cloth pockets that housed various transducer blocks capable of converting the electrical signals for vital signs such as heart-rate and temperature; these signals were then passed out of the suit and sent to the Primary Life Support System (PLSS) backpack to be broadcast back to the doctors at Mission Control in Houston. In fine condition. Accompanied by a certificate of authenticity from Irwin's daughter: "I hereby certify that this Bio Belt Assembly was used by Jim Irwin and was from his collection."
