These are pretty pricey for little socks.  Two of the socks got small holes in the toe area the first time I wore them.  However, the holes never grew so they are still wearable.  These socks are definitely more "no show" than other socks I have purchased.  They don't show under any of my flats or heels.  I think the no-slip grips do a good job of keeping me from sliding around in heels.  The rubber heel grip keeps them from falling down your heel.  Overall I don't think they're a great bargain for the price, but I haven't found anything better so I'd still recommend them.