Pattern 80 webbing was a trial to replace Pattern 70 webbing with more modern nylon webbing.  It ended up being used in South West Africa (Namibia) by Recces and South West Africa SF (SWASF?, source: http://www.newrhodesian.ca/viewtopic.php?p=4626#p4626) while Pattern 83 webbing, incorporating features from civilian backpacks, became the general issue nylon SADF webbing.

Sample 1: