The history of the pressure suit from its origins in the 30s for high altitude pilots to space missions is one which perfectly encapsulates (no pun intended) all of the aspects of product design from craft to science. Aesthetically, the first pressure suit, created by the aviator Wiley Post in 1934, looks more like a deep sea diving one, just as deep sea diving inspired the fictional aesthetic for robots and space men, until the space race. But the Post suit is where the two design styles diverge, culminating in the Apollo mission suits which were produced in craft fashion by the seamstresses of bra manufacturer, Playtex after their proposal outperformed those submitted by engineering contractors.Pressure suits don't need to be air tight, apart from the helmet, because human skin is, they just need to be tight to stop your skin swelling. Those worn by pilots are usually different from astronauts, who also have to wear external layers of reflective insulation (separated by intermediate layers of non heat conducting material, exactly like modern loft insulation) and a protective skin against micro-meteors and abrasive dust. As well as all fabric pressure suits, there are rigid or partially rigid ones, such as some of the moon walk prototypes or space walk (EVA) ones which are hybrids of a rigid torso and flexible limbs. EVA and moon walk suits have a life support system as a backpack, while astronauts often carry theirs like a suitcase, as a backup in case cabin pressure fails.