These are excellent no show socks. They are very thin but soft and comfortable. I wear Vionic slip on shoes and they do show slightly but that doesnt bother me.  For many years I bought a name brand boat shoe liner and they were superb but the last couple of years they  shrank after a couple of washings it they slipped off the heel. I bought these not really expecting much but I am delighted with them. I ordered another package.