Really cosy and a very cute design. i believe they will keep circulation going and prevent or reduce swelling in the feet and ankles The back of my heel is almost hanging off. I originally bought the Amazon Smart Plug and that was a joke. My normal shoe size is an 8 1/2, but I sized down to an 8 because it is an open shoe. I would of bought free runs if NIKE got their crap together and released the 2019s I would of gladly paid $40 more than these garbage shoes. Maybe I got a dud and hoping the next pair holds up! Shipping does not take that long, took about 3 weeks. The O key is also showing signs of the blue color failing. Everything lined up perfectly, and it stands flat with no rocking.