Soldiers had to walk a lot of time where the equipment could not pass, and all the property, including food, warm clothes, sleeping bags and appliances, had to be always carried with them. By the way, in a similar situation were American soldiers in Vietnam, but they were quickly adapted equipment. There were boots suitable for the jungle climate, tropical uniforms, moisture-resistant equipment made of nylon, giant backpacks, and so on.
Therefore, the Soviet uniforms were also adapted and improved. First of all, the new uniform was issued to troops in Afghanistan, so in the USSR it was nicknamed "Afghanka". Although in Afghanistan itself it was called "experimentalka". And they called it that for a reason. Compared to the previous uniform of 1969, "Afghanka" was characterized by a lot of advantages. For the first time the Soviet field uniform received flat plastic buttons, instead of voluminous metal ones. And they were also closed with a bar. Thanks to this buttons were lost less often, because they did not rub against all sorts of obstacles during crawling.