I have tried every shoe imaginable and these are the only ones that allow me to stay on my feet for hours with no pain. If I could give them 10 stars, I would!! I wish I had a pair of crocs in every color they make, so I coud wear them all the time, but that's just me being comfort greedy.I am a manager for a very large restaurant chain. It is extremely busy and fast paced. More often than not, once I walk through the door I am on my feet from 8 to 14 hours with no break. I have Degenerative Disc Disease and due to injuries to my feet years prior, I have major pain when I am on them for any length of time. Before finding these shoes, I would literally ( Yes, I do mean literally) have to crawl into my house because my feet hurt so bad. The muscles in my back and over my ribs would spasm to the point that I would almost cry because of the pain. Once I did get into the house and sat for a couple of hours, I would have horrible cramping in my calf muscles and feet. When I would go to bed I couldn't find any position where my back didn't cramp. Since finding these shoes, all of that has stopped. I can work a long shift and at the end my feet and back don't hurt and no muscle spasms. I am 50 years old and can easily keep up with those that are 30 years younger.These do run a little large. I wear an 8.5 so I ordered an 8 in these and they fit really well. When you first get them, they may feel hard and a little tight. You may think they aren't going to be comfortable. However, once you wear them they actually will conform to your foot (This doesn't take long at all). They feel really comfortable and the slip resistant sole is fantastic. I walk through standing water and spills all the time and have yet to slip. Unlike many types of slip resistant soles they don't grab onto the floor making you trip. I would advise though that you wear a form fitting sock. My only complaint is that they aren't fuzzy sock friendly. Due to the massaging nubs inside, they have a tendency, if not wearing a form fitting sock to pull the socks tight to the toes as you slide your foot in. They are a very attractive shoe and are not bulky looking. They clean up beautifully with a damp cloth.