Airsuit

... and in a paroxysm of fury clawed at the convict's airsuit as though he could rip the fabric apart with his bare hands.

Source: wiktionary

Opening the forward hatch, he winched down the little platform flyer, loaded aboard a spare airsuit and spare tanks of oxygen, and without further ceremony set out for Thumbnail Gulch

Source: wiktionary

He stopped removing his airsuit and pulled it back on again, all but the helmet, which he left lying on the ground.

Source: wiktionary

Spacemen call it an “airsuit liner” because it is made to fit under an airsuit and is padded and reinforced at the friction points.

Source: wiktionary