Have a set for every pair of closed shoes/boots I own!
2 years ago, one foot hurt so bad that I only had about 20 minutes of standing or walking and I hurt too bad to go on.  I thought I was crippled for life (really).  Went to a foot doctor - he prescribed a medication and gave me a pair of these. (I had plantar fasciitus)  When stepped down in the doctors office and the pain was lessened to almost nothing, I started crying from happiness that there was hope that I could walk again normally.  I had tried every insert that is sold in drugstores prior to this - none of them helped even though some of them looked similar to these.  The medicine and the insert cured my problem.  I now have these inserts for every pairs of shoes/boots I have.  I paid $44 at the doctor so these are an excellent deal.
Rating: 5 stars