A year or so I would have have been ashamed to make the following reccy, but after a year working in them I can seriously say Crocs are both the ugliest and best designed work footwear ever invented for those that don't need protection.
I've worked my whole life on my feet and I've done the clogs, running shoes, boots, etc.
Nothing has ever caused less fatigue than these rubber abominations, nor has anything lasted as well and been easier to clean.
They can withstand 90 degrees Celsius, the hottest wash cycle, and you can throw them in the wash as often as you want and they never wear.
Non-slip, anti-bacterial, comfortable (same shape as clogs), and virtually indestructible, they are fugly little wonders of modern technology.
I wore them for 70 hours/wk for months and had zero fatigue, no athletes foot, and they are like new after a year.