I had to return the first pair as I ordered the wrong size. If  you wear a "half size" order up to the next whole size. I also have  plantar fasciitis and purchased these to wear around  the house. Because of the pain in my heel it was suggested to me I not go barefoot ,which I love.  I needed something really comfortable and the pain in my heel has lessened considerably. I will be ordering other  styles that are a little more fashionable to wear to work.