Never had a blister with them! However I do wear coolmax socks with them!
I think that's the secret nobody tells! I'm sure it makes a difference.
OK guys here is my trick..it may seem weird..but it works...
for croc wearers..number one, they have to be real crocs..not the fake knock offs..they always hurt!!
I have 2 tips!! Number one: IN the morning before you leave for the parks, add baby powder to the shoes till it covers the spots, second, if you don't like that, I use spray deoderant on my feet, my feet don't sweat, therefore no rubbing!!
Or you could always look like a dork and wear the socks..lol!
WHatever works for you!!
On last year's trip I took Crocs (broken in), Nike tennies, and my Teva Whitewaters. The day I wore the Crocs (no socks) was the only day I got blisters. I ended up mostly wearing the Tevas - most comfy shoe I ever had, I think. They weren't even that broken in, but I didn't need bandaids, socks, powder, nothing, and my feet felt great all day. Plus they are way cuter than the other two pairs.
Can't find anything called "Teva Whitewaters" on Zappos.com.