Needs clarification on sizing
I've ordered both a medium and a large.  The problem is the area of the foot that determines the size is around the ankle.  The sleeve around the foot is the same size for both the medium and the large.  Both are too small for my size 12 feet. I've had to try and stretch the sleeve around a bottle to adjust the size to fit.<br />Once I got the sleeve to fit, the product works exactly as described and gives very good support - even for long runs.
Rating: 3 stars