Uncomfortable and dont hold up. We?ve been repainting remodeling and doing some updates to the home to get ready to sell in the next couple of years. Ive liked them quite a lot but my ears get a little sore at times after extended (2+ hour) listening. Crocodile is getting hungrier and thinner, and Chicken is getting fatter. It is not waterproof. No, they dont slide on wet surfaces, but yes, they will slide on surfaces covered with dry flour just like any other shoe. with the last 30 minutes. Ecco shoes are terrific. And a few reviews say that they could only fit one shoe per slot, but honestly they are pretty wide and deep so you should be able to fit actual pairs in the slots unless you have a shoe that?s over a size women?s 11-12 I can clearly hear what others are saying while my cat is meowing in front of me or vacuum is running behind me.