Winter jacket with temperature regulator:

by int80h:
Builders often use similar jackets, they are actually not a few different. Also used a couple of such, on "space" technologies, and domestic ones. What else liked, the active sweat collection system, the jacket is designed for active work when a person can sweat, the sweat was collected in a separate bag inside the jacket, so if you even dig a spade all day, then it is absolutely not wet.

by Ocelot:
The sweat was gathered in a separate bag inside the jacket.
At the end of the shift, all the workers give up the sweat. If it’s not enough, it’s hurting at work :)