Here you can find one of the most popular Russian type vests - belt systems. They were created for Forest and field battlefields, when you lay on the stomach and doesn't have access to the chest pouches. So, in this case you need to use belt systems. All pouches placed at the edge of the belt, so, you can totally snuggle up to the ground to avoid enemy fire and you have easy access to the pouches to recharge.
They was created for placing additional equipment on belt. Usually used with Plate Carriers, or just with bodyarmor, they provide additional Molle platforms for your equipment. We are recommending to use them with suspenders.
They are created to fulfill two functions - first to hold battle belts, and the another one - to provide additional platform for equipment. Russian Units usually placing medkit and radio pouch on shoulders.