After talking with a close in-the-know friend of mine, I got curious on this.
I'd like to potentially make my own inflatable suits/costumes someday. Ideally I'd like to use two type of material: one that's stretchy to somewhere around 2x-3x original size (so as to make something that uninflated, fits flat, almost tight, but can stretch and be inflated) and one that's less stretchy and more permanent. I'd also like to use a variety of colors, namely, bright colors, skintones, and black.
My questions are:
1. Does the stretchier fabric exist?