I've tried many makes and models of shoes including other Asics. These by far are the best to reduce knee pain and fix how I walk with extreme overpronation. I'm tall and skinny, 5-11 145lbs very fit. The 11 1/2 in medium fit my average sized feet perfect. Even after 2 weeks they still have that new feel and not a broken in one. I'm also 27 and don't want to wear shows that make me look like an idiot which many stability shoes try to do. You know the ones that are like 2 inches tall and very plain/ugly? Well these look good and you can't even tell how thick the sole actually is without really looking closely. They designed the colors and cuts well to hide that fact and keep them sporty. The price is also very fair at around $80. Great purchase.