Simple as AK-47, comfortable, like any bed after Vodka and durable, like bear fur - this is the best description for any Russian Army Bodyarmor. Their main aim - protect soldier, be cheap and simple and of course be comfortable for multiple day use.
Police (MVD) Bodyarmor
MVD (Police) bodyarmor usually simple and provide maximal comfort and mobility. It's main aim - provide basical protection against pistol bullets. That's why the main aim of this bodyarmor - comfort of the Policeman.
Everything, what wasn't included in other categories. Like Specops bodyarmor and etc.