I'm talking about this:
Just look at them, they are CLEARLY wooden arms, which I don't know why.
Have you never seen sweaters with stripe stitching in them?
http://www.arcticoutdoor.co.uk/shop/seasonal-alternatives/sweaters/jahtijakt-supreme-sweater-green/prod_117.html
Wooden arms would seriously make no sense in the first place and even less when your base is in a volcano. In real life being that close to volcanic temperatures will burn you and for that reason heat resistant coats and specialized suits are worn. It's much more likely that Magma uniforms are something of that sort than hoodies with wooden arms for no reason.