These items in “Donkey Brown” cotton material were produced by South Africa for export to their UNITA allies in Angola during the Border War.

Suspenders:

Belt Loops:

Slips over belt.

Buckles:

Pouch:

Inside:

There are 2 pull tabs inside the pouch to make magazine removal easier. A similar feature with thinner strips of ribbon is also seen in some SADF chest rigs.

Metal Hardware:

Bottom:

Drain hole on bottom.

Usage Photo:

1980: UNITA troops with 75 mm recoilless rifles (from https://twitter.com/modernconflict/status/1298958827900096513).