I do a lot of internet shopping and these are one of my greatest disappointments.  They are so oversized it is ridiculous.  When I looked at the item I thought, "well, I can deal with this". It didn't seem worth having to pay the return s&h to get a smaller size.  Wrong.  The treads are supposed to make them safe, but the whole "bootie" slips and the treads stay in place. I don't even want to donate them to charity because I don't want anyone else to get hurt.