These slides are super comfortable. Great to wear in & outside the house and around the neighborhood. The Revive Foam feels really good on my feet after a run. BUT... usually I wear a size 10 in Nikes. I picked up a pair of Offcourt Slides two years ago at a DSW, and the 10 was too small. My heel was right at the edge so I went up to a size 11 for a bit more room. I just got my second pair - bought on nike.com - in size 11, and they are running small. They're actually shorter in length than my old size 11's by about an inch. Did Nike change the specs on these?? Not sure if I should keep these and get used to this fit, or go up to a 12.