Very comfortable. No rubbing and I feel like I could walk miles in these. The fit very securely on the feet and the soles are super durable and non-slip. I typically wear a 9.5 in closed-toed shoes and a 9 in sandals. These worked best in a size 8.5. I have low volume feet/a low instep and the straps weren't hugely loose as they are with most sandals. The arch support seems to be placed a bit farther back than where my actual arch is located. The only negative is that appearance wise, these are kind of heavy looking and not very feminine.