Bought these to walk the dogs throughout the day (usually for 20 minutes). Also use them when watering plants/shrubs outside, getting mail, or throwing out trash.  More comfortable than flip-flops as they provide no arch support and you can't really walk fast in them.  Have not worn them longer than one hour.  They fit as expected b/c the description does say they run a little large.  I normally wear a 6.5 so I purchased the Women's 6 US.  You have to get used to the cushioning/padding inside.  They're textured with little plastic nubs that massage your soles as you walk. B/c I don't wear socks, when I take them off and walk on the carpet, there's a strange sensation on the soles of my feet. Not really a complaint, but I can see why it might not be ideal for all-day wear.