They're about 3 weeks old, have 3 rounds on em now and have been getting more comfortable as I wear them. Seem to be wearing well...You can find them on keenfootwear.com
Right now, I haven't been able to find them in any stores, but you can order them from the internet, they were 125 bucks from the company website including shipping. You might be able to find them a bit cheaper from a different website, as they are available on several. I just feel a bit better about ordering direct from the company. Also, I got my size and they were way too snug, so exchanged for a half size bigger.
Hope this helps!