Modernized load-carrying equipment
The M1967 Modernized Load-Carrying Equipment, also known as lightweight load carrying equipment, was introduced into United States Army service in 1968 during the Vietnam War. Designed to supplement rather than replace the then-standard M-1956 load-carrying equipment, it was similar to its predecessor but used nylon rather than canvas duck.
Source: Wikipedia — Modernized load-carrying equipment (CC BY-SA 4.0)