These are a great little tool!
They do help tremendously.  I have had plantar faciitis for way too long now.  These do seem to ease the heel pain.  I bought both kinds and I like the deluxe better because of the little tread lines.  Both they are both comfy.  I really don't know if my heel will ever stop hurting but this is a good tool to have to make walking tolerable.
Rating: 5 stars