Excellent!
I bought this as a supplementary Christmas present for my boyfriend (that's strange, I know).  He has pain in his knees and hips stemming from flat feet and osteoarthritis.  It took him a little time to find the right position to place the Sacro Wedgy, but since he did, there has been a marked improvement in his pain and in his alignment.  After less than a week of using the Sacro Wedgy, the amount of pain relief it has brought him is more than well worth the price of the product.  Definitely worth a try for those of you with alignment problems!
Rating: 5 stars