the top holding of the foot is average, if they are comfortable. the main advantage for me is that I people more time to try to find what goes with which sock; I pick at random from the stock and it'll be always sailed, bingo! when one is worn out, I throw I was always plenty of other tjrs available. It may be that the quality and longevity is average but for me the main advantage is inventory management / time to spend there. it makes the job.