Body inflation

I saw this video where this guy tried on a blueberry inflatable suit and what's interesting about the suit in particular is it came with a stretchable belt.


It made me wonder how I can replicate that exact belt? I would love to have my BHM friend try it on while he does stuffing or inflation.

Maybe a resistance band with some very light velcro on the ends for a simple fastening & release.
amazon.co.uk/Resistance-Skin-Friendly-Exercise-Workout-MULTI-COLOR/dp/B0D9NSRN1N/ref=sxin_17_pa_sp_search_thematic_sspa

Late response but thank you for the suggestion.

No worries. Hope it was helpful

I've been thinking about this concept for a while now, there are also magnet clasps that may be good for this.
I want one...to be able to eat until it "pops" open would be super fun!