Life in the galaxy is tough. From vacuums to radioactive planets to lava and ice, most of the galaxy's space is totally uninhabitable to forms of life. Even alien forms of life, like those who are found on methane worlds, find much of the galaxy totally impossible to inhabit. There is, of course, a solution: Enviromental suits, also known as Esuits or Envirosuits, are tailored around a specific purpose. Keeping someone alive on an ice world through heat regulation, oxygen recycling for low-oxygen planets, even allowing someone to exist (albeit for a short time) in the vacuum of space.