This thing is pure heaven and it's and actual MASSAGER not just vibration! It's like deep tissue massage and compression with heat. The heat tho, is kinda crap. I don't think it gets really that warm, never has. Now you are probably wondering why I'm selling such a glorious machine? Well, it's because I up graded to a better and more expensive model. This model was $120 when I bought it and I have used it quite a bit. So if your not sure if you'll like one of these machines this is an inexpensive way to try one out. And no worries about someone else's gross or smelly feet because they design these so you can easily remove the lining and wash and disinfect it. Which I have already done for you and I also cleaned and disinfected the outside of the unit too. But for your own peace of mind you may want to clean and sanitize the lining again. Its just Velcro'd in so it's easy to remove and replace. Hand wash only with warm water and mild detergent. Then hang or lay out to dry. Once dried I sprayed it with this stuff you use to spray the inside of shoes to disinfect them that kills Everything including Covid AND Mersa! But Lysol or something similar will work too. Then leave it laid out to dry again and once dry just Velcro the lining back in and your ready for pure bliss! It has different modes to choose from which are just different patterns of massage and you can also choose the intensity of the massage too. I suggest starting with the lowest setting first til your feet get used to having a deep tissue like massage and you can set different timer settings too. It fits up to a men's size 12 foot. The last pic is a screen shot of the box of this make and model except mine is black not brown.