Designed so you don't even notice it's on, the 820 will become a piece of your body. As it slides over your knees they will heave a sigh of relief. As you slide down the court every which way you can focus on making that game saving dig without having to sacrifice your knees. With a tight fit it will give your knees the added support they need without slowing you down. This piece of equipment will become more important to you than a helmet is to motorcycle rider.