How to make a Magical Environmental Suit?

[Coinage]

Hello everyone.

I am struggling to create a spell that creates a kind of Environmental Suit. Essentially, in my world, if you want to travel to other planes, you need to create a kind of "bubble" that acts as an Environmental Suit, allowing you to survive in other, environmentally hostile planes of existence.

For inspiration, I was thinking about the spell "Ghost Shirt" from GURPS - 4th Edition - Thaumatology - Ritual Path Magic a.k.a. "RPM". In that spell, ths spell, "spell protects the wearer for the next 30 minutes
as if he had a DR 6 force field (see p. B47)." (RPM, p. 43)

I was thinking of a spell that would grant a kind of Forcefield that acts as an Environmental Suit for maybe 24 hours, something like that.

Any suggestions or references would be helpful, thank you.

[Varyon]

Environmental suits provide the Sealed Advantage and also serve as an air supply. So for a spell that mimics this, you pretty much just need Sealed and Doesn't Breathe. Note if you want the former to also protect your gear, the Force Field Enhancement can simply be stolen from DR (if you're wearing some sort of living thing as clothing, you might be able to justify putting that Enhancement on Doesn't Breathe as well, although if that thing is sentient and can act independently - say, a cloak that can grab things for you, probably built as an Ally - the GM might call for Affects Others instead).

EDIT: Environmental suits often have other effects such as Vacuum Support, Pressure Support, DR, Radiation Tolerance, even enhanced Lifting and/or Striking ST. Superscience ones can include various flavors of Regeneration (a low level of that might be achievable just with high TL, no need for ^), Improved G-Tolerance, and more. If you want a "one ritual fits all" for purposes of Specific Definition, you may want to include all the above, at least at low levels.

[Coinage]

Gotcha, thanks for the insight.