Bought a pair almost a year ago, they look good, and feel good at the bottom of my feet and keep my me cool, however I'm just not a fan of the adjustable heel strap.  Because of the way this is designed the pad does not wrap all the way around the heel of my foot for even pressure distribution and and as a result it will often get uncomfortable at one of the corners of the padding (although I have never had a blister, only redness).  To add insult to injury, just last week the D-ring used for the heel strap broke, so now I can't wear them and they need replaced.