Pants from Apollo 8 flight suit. Pockets at knees.
Material
Printed inside pants "Trouser Assembly / BW-1043-02 / M / L and S/N: 1006" and "Inflight Coverall Garment / BW-1043-003 / SN:1018 / CONTRACT # NAS 9-830 / MANUFACTURER 10-30-68 / MADE B. WELSON COM".