Thanks everyone.

I think I found what he was wanting info on. It's called an
inversion table.
Pugsley, your sister broke her back on one?
RR, ??
Goofy, he's mostly wanting it to relieve pressure off of his lower back. He has sciatica and he read or heard from someone the hangup thing might help relieve some of that pressure. More than likely, I'll be his spotter.

He used to see a chiropractor frequently because of his back, but I don't think he's ever had a back injury. I haven't had an injury either, but I doubt I'll use the thing (if I want the blood to rush to my head, I'll stand on my head like my kids do

). Thanks for the info and the advice.
Thanks, Tstobb.

I don't think he's checked into this thorougly enough. I'd hate for him to work on one problem and create more. I didn't think of the knees having pressure.
Jill, I think my SO is thinking of those boots. I told him I'd love for him to get one of those tables though and have just enough room to flip him around a time or 2 (j/k).

I think that's why he's thinking of the boots instead of the table.
