I am very pleased with Grip6 products from their belts to their socks. The belts are true to size, based on one's pants size, which is the sizing process suggested by Grip6 tutorial. The socks are very comfortable, but the sizing is not compatable with my dress. Their Crew Height socks and less than the standard crew sock height and the boot sock height is definately not supportive of my current boot sock heights. I have chosen to purchase the boot height sock to support by current crew sock height. Other than the questionable height, the socks are great. I would give it a 4.5, but the sustem will not allow.