I ordered these in a adult XL, according to size chart. These were too big length and width, so I got an adult large, can you believe these were too small. I think if they get the sizing right it could be a good product until then unless your lucky and get some that fit " beware".

I wear socks on the mat to prevent mat burn. Socks are stretchy though, and slip around, so I was thrilled to find these. And they do seem to be perfect. Non-stretchy and breathable. They seem to be well made. I measured my foot at 10", so I ordered a size L according to the chart. The length is just about perfect. However, the width is not at all perfect and since these are velcro closure and the velcro patch is very small, either your foot fits or it doesn't. The velcro is about 1/2" wide and runs lengthwise so there's no adjustment. You can't just tighten the laces or straps to fit more snugly. So, these fit my feet like baggy slippers and would slip around on the mat worse than socks do. My search continues.

One of my student's wear a child size 6 shoe. The sizing chart says he should be a Youth Small. Couldn't even get halfway on. We have to order him an adult small. Be sure to size way up on these. Otherwise, they're ok- the kids like having warm feet.

Well made and durable, but do not fit as tight as they should/could. Need to have 2-3 times wider patch of Velcro on the main body of the sock to allow the upper tab pull tightly around the circumference of the foot. Otherwise would be 5-star.

These are nice however, they run small, by like two sizes.

I love these socks and they are perfect for my teaching and workouts. They do not slip or slide. I have terribly dry and cracked heels. These socks keep my feet from drying out and making the cracks in my heels from expanding and hurting. This is a must for every martial artist. Well done!!!