I have ruptured both Achilles. These are the only shoe I have found that minimize my pain. So much so, I have been able to rehabilitate and am walking and standing more than ever. Before these shoes, I was only able to stand less than an hour before the pain was unbearable. Currently, I am up to 6+ hours with minimal pain! The secret is the heels for me which are ber spongy. An important consideration is that these shoes are wider than Nike and other trainers which also contribute to their comfortableness.