These trousers are part of a four-piece inflight coverall garment worn by astronaut Edwin "Buzz" Aldrin during his Apollo 11 mission in July 1969.
The complete garment, made by the B. Welson Company, consists of jacket, trousers and boots which had a circular Velcro patch on the soles. It is constructed of a Teflon-coated beta cloth which is highly fire resistant, and the "slippery" qualities of the fabric enabled the astronaut to don and doff the garment with ease in a weightless environment.
The jacket had a US flag on the left shoulder and a NASA "meatball" logo on the upper torso. Flight garments also had a mission symbol attached to the upper torso.
Transferred to the National Air and Space Museum from NASA in 1979