These are thin neoprene booties that are fairly comfortable and easy to wear.  They tend to be a little too  chilly or too warm for my feet  and  the Large size were a bit tight on my 9EE feet.  I don't think they would last long if used outdoors but inside my home with hardwood floors, they are fine as a replacement for socks or shoes.  I did not like them with shoes as my feet got too sweaty.  I like that they are machine washable and can pretty much be worn anywhere in the house, even in the shower or bed if you're  so inclined, which I am not.

Overall, they are functional and stylish, comfortable enough and not overpriced in my opinion.