The hero says that the clothing of men in the 20th century has not changed. Let's say "worlds of Noon" on the contrary talked about changes. Given the form of "Warrior", most likely there will be changes. For example, there are built-in harnesses on the key points. In case of injury, it is enough to remove the seal and tighten the tourniquet. No effort is required to stop the bleeding. This is the current existing form.
The world of the future communism of "Noon" assumed entire medical stations in clothing. When a person is in danger of giving out the necessary injection of medicines. The alert system transmitted a threat signal to the robots. The robot is obliged to save human life at any cost even of its existence.
Clothing had climatic functions. In the heat, it gave coolness, and in the cold, it gave warmth. Do you think the scientific developments of mankind under communism will not be aimed at such comfort?