I ordered the RX Relief croc directly from the Crocs site but found it slightly cheaper on amazon. I was hesitant at first because this clog only said "Relief" vs. the RX Relief I was used to seeing. I took a chance and am satisfied with the product. I use this Relief clog around the house instead of going barefoot because of my plantar fasciitis. I don't really know how the arch or heel are much higher than standard Crocs, but they WORK and I have no pain in my heels or arches thanks to this Croc. Very satisfied.