I bought these a few weeks ago from one of the local Japanese stores (Marukai) to try out my first soak in my new tub! I've got a bath pillow and everything :) I had a step-in shower for years now and I haven't soaked in a bath since "Spa World" in Osaka--over a year ago! Anyway, I'll be using the pack in the middle and it's supposed to make you sweat. I just hope it isn't too potent. I honestly didn't even read the other two (the left is upside down, sorry), but I'll try them sooon!