Nice socks to keep your feet cool. I was worried about durability because they are thinner than every other MX socks I've owned but for no reason. After a few dozen rides and washes, at this point, they are still in almost like new condition. There's more padding around the foot, where needed, and less material around the shins which is perfect. They are great at keeping my feet as cool as can be in a MX boot in Las Vegas and even out perform my Fox Coolmax socks, my former favorite. I wear a size 10 shoe and the L/XL fits my perfectly. Those who are up to 2 sizes smaller/bigger could probably fit this same sock.