I have been a chef for 30 years and started off wearing wooden and leather clogs for the first 5 to 7 years. With different jobs I tried different footwear. I have had a couple of birkenstock pairs of clogs but they have split at the ball of the foot after less than a years use.
These crocs have turned out to be very comfortable and durable, so far after 3 months of very heavy use (10-12 hours a day, 5 days a week, sometimes 6) and wearing them on a concrete floor that has worn out other shoes quickly I am very happy.

They have worn on the sole slighty, but not as much as I thought they would and the rest of the shoe has held up well so far.

The sole is quite spongy on the hard floor and has been resilient for someone of my weight (155kg/350pounds) which is very important to me.

I like the breather holes on the side of the shoe, I don't get sweaty or hot feet at all (gotta watch out when there is water on the floor!) but the grip is excellent.

I've thought about buying another pair already because if I find good shoes I like to plan ahead, but I will push these ones as far as I can and see what happens. I am on performance so far, hoping for more than 12 months use.

I will update if I find issue with them.

D

UPDATE
After repeated use with these crocs I am finding that I am wearing holes in many pairs of thin socks, more than I have ever done normally or with any other shoes!

D