You can sell them to your clients with your logo on them.
They are warmer than traditional sheets.
They replace sheets (so you don't haveto clean sheets)
You can hop on and off the table in a training environment. If you want to teach couples some basics without having to teach them how to drape.
You can do stretches without any whoopsies.
You don't have to mess up clients clothes doing chair massage.
You can protect your knees if you do floorwork w/kneepads
and you can transition clients who are really modest to the table quickly.

OK, here's some honest feedback. I don't like it. It's sort of hokey, impersonal, mechanical, and clinical. I'll stick with sheets or towels...