The soles and footbed are some sort of hard, synthetic material that is harder and stiffer than rubber, softer than plastic. Do not look directly at the light when it is flashing! I had high hopes for this, as you can see by my initial review. He comes from a group of prisoners sent to a prison planet by an evil emperor bent on shipping out anyone who might oppose him, even in opinion. Its nice to have a separate button for bass boost because its a feature that I rarely use - it only sounds good in certain circumstances. Ingredients of concern: Sodium Laureth Sulfate, Sodium DodecylbenzenesulfonateOf all the detergents they researched and tested, All had the second-fewest skin irritating. Wearing the beads on my waist I noticed when I have over eaten, the beads adjust up and down. These are going to be so easy to clean and I?ll be able to wear them for a while! I really enjoy how easily I can move it around and how it can be used in many different rooms and for many different reasons and can be great for a home office or a bathroom so I am buying a few more of them at the price you can not beat! Tldr; the product is pretty good, especially if you are concerned about hygiene/wear and tear, albeit a little pricey.