I was definitely not impressed with this product.  I had not even used the thigh highs once and as soon as I took them out of the packaging I saw what appeared to be a run on one of the legs.  When I put them on, sure enough, there was a run on the left leg (I bought them brand new).  Not impressed, and never got to wear them!
  BUT I will say this.  The company did a great job with getting the product shipped in a timely and efficient manner.