I was really excited to get these since I pretty much live in slippers around my house. When I opened the box the chemical smell was so bad I had to put them outside for a few days. When I brought them in an wore them for about 5 minutes before putting them back outside. I even had to wash my feet!  That's how strong the smell is.  They are also so thin that I feel like I'm barefoot on my hard tile floor. Don't waste your money on these. I guess you get what you pay for in this case.