eventually let water in - and being waterproof - they keep water in
That's how a wetsuit keeps you warm, and I've heard that the winter boots have the same effect. Because it's only one lot of water not a continuous flow, it soon heats up to body temperature and after that it can't extract any more energy out of your body. Wet feet, but warm.
That's how a wetsuit keeps you warm, and I've heard that the winter boots have the same effect. Because it's only one lot of water not a continuous flow, it soon heats up to body temperature and after that it can't extract any more energy out of your body. Wet feet, but warm.