I've got a less colorful pair of this brand and they're super comfortable but durable enough to wear outside. I wear them in the office and around the house. Makes getting the dog out real easy, too since I don't have to tie shoes for a short step outside. I would NOT wear these if there was going to be a significant amount of outdoor walking.

I wouldn't say I'm an old man. Only 38. My boss is a couple years younger and turned me on to these.