Hi Mariza,
I came to the website because I just bought the large body wraps after injuring my back and figured I would read some posts and post my results for the plantar fasciitis I had.
I had terribly bad plantar fasciitis in both feet. I used both the cold wrap and BFST on both feet and got complete relief from my left and partial relief with my right foot. I was amazed at how it worked. Before getting them, when I slept I wore the PF socks and hard shell boots. I began a stretching routine, but none of that reduced the pain any. My wife found King Brand's website and got both products. Relief did not come overnight, but the one thing I did notice immediately was that unlike the ice packs or the heating pad I had used, since the wraps are like a shoe, they treated exactly where I needed and there was probably less heat/cold lost than with the others because of the way it fits on the foot. After using the products for a week, I ordered the KB support tape and began taping my feet too. This really helped with both feet. I would highly encourage you to get these products.
Good luck!
