I had a problem with PF in left foot twice over the last 10 years. I tried cold packs then heat pack, relieved the pain for a while but never really treated the problem. A brace was recommended by a doctor friend. So I bought the brace, it is a hard semi-boot type that I wore while sleeping. The brace is not made to walk around in. Both times when the PF flared up I wore the brace every night for 2 to 3 weeks. Everyday the pain would decrease until it was gone. I have not had the PF return for over 3 years now. If my heel gets tender I will wear the brace for a night or two. The purpose of the brace is to stretch the tendons in the arch of the foot where the inflammation starts.