Based on an Actual Item for sale on Aliexpress. It's amazing what the Asian people will do to avoid rain...!

Shan had been shopping online, and had been amazed at the unusual rainwear that you could get. She had already modified one of the umbrellas from Covid-19 days to make it a portable bondage prison, then she spotted this little number. She quickly ordered a sample...

Shortly, it arrived. Now, how to test it...

First, she made some slight 'adjustments' to it. One was to ensure that once the hood was fully over the wearers head, a transparent collar would lock around their neck, sealing it on. She also fitted a timer to the valve on the front, which had a 'heads up' display that only the wearer could see, telling them how much time they had left before the hood went airtight. She also fitted a gag...

One of the girls from the college up the road was soon grabbed, stripped naked, dressed in a pink Victorian ballgown with petticoats (to fill out the rainsuit, as it was originally designed for cycle or moped use) and he struggling girl was then pushed into the rainsuit.

There was a click, as the collar locked...

"You can now see a timer in front of you", Shan said. "That's how long you have got to get out of your suit, before the air valve shuts and you suffocate. I've reinforced the suit, but you might be able to cut it..."

Shan just pushed the girl out of Samoto, into the street, hen went back in and closed the door behind her. She then switched on the feed to the girl's webcam, and settled down to watch the show...