After a month of usage, wished it was stronger.
Looking for air bag massager and thought I try this one.  The air pressure is great.  Wish it was strong.  The first few times the roller massage hurt, but with a little feet positioning and wearing a pair of socks, not too bad at all.  Now that I am used to it, I wished everything was stronger.  1 star off for the not heat what so ever.  It's just a light on the controller.  There's absolute no heat coming out of this.
Rating: 4 stars