[This review was collected as part of a promotion.] I like it, but, have to be very careful on how to use this. It can cause a misalignment on the spine, when I am trying to straighten my spine.
[This review was collected as part of a promotion.] I think the product is fine but there were no instructions on how to use it properly. So I do not want to use it until I can figure out a way to use it without damaging my lower back.