These belts are part of the old school ALICE web gear load out. Heavy duty and adjustable, with the right pouches these are good for a variety of uses.
USGI ALICE Pistol Belt, OD Green [Genuine Army Issue]
Pistol Belts, Expert Customer Service
USGI Army / USMC Pistol Belt for LBE / LBV LC-2 ALICE Size Med 30-36 waist
Tactical military belt and suspenders range for all needs - GoMilitar
USGI ALICE Pistol Belt, OD Green [Genuine Army Issue]
Belts & Accessories
Military Outdoor Clothing Previously Issued U.S. G.I. Medium Olive Drab Military Surplus Pistol Belt with Black Quick-Release Buckle : : Clothing, Shoes & Accessories
My take on a modern ALICE rig : r/QualityTacticalGear
Perang Dunia II WW2 Kami Tentara Anyaman Peralatan Kanvas, 44% OFF
Military Alice Belt
GI Style H-Style Suspenders – McGuire Army Navy