Each seam is glued, sewed and protected with a special rubber tape.
In a gastight suit at high ambient temperature normally the temperature rise up to 60 - 70°C within a short time. So the working time sometime is less than 30 minutes at aggravating circumstances.
With the fresh air blower and the special air distributing system the working time at the same conditions is up to 4 hours 2 time a day with a rest of 2 hours. The special hoses bring the fresh air to a big area of the body surface, never blowing direct to the skin -> no cold areas.