The many regulation possibilities ensure that anyone can find a perfect fit. Therefore, although the braces are by no means lightweight, the perceived weight is negligible. Once you put your riding boots on the braces are prevented from moving up and down and thee feel becomes even more comfortable. They allow for a nice range of movement, though if you bend your knee to an extreme the two knee-cups tend to get briefly stuck before snapping back to place. This however is well out of the movement range used during riding. The only drawback I can think of is that the brace feels very wide at the knees and it takes a few days to get used to how it feels “grabbing” the bike with the braces on. Aside from this you will soon forget you are wearing them, while they offer very good protection. If you want better braces than this prepare to spend at least twice the price. In the same price range nothing I’ve ever tried really comes close.