Co-molded ABS/TPU chassis delivers comfort and durability Anatomical flush mounted hinge design allows natural knee movement Low profile design minimizes weight and optimizes fit Light weight molded EVA foam interior liner for premium comfort Strategic ventilation provides maximum cooling Post-latching top closure with adjustable hook and loop strap Stretch mesh calf-sleeve for cooling and comfort Top closure and calf sleeve feature silicone print to ensure secure placement These knee guards are in 3 sizes of S/M & LG/XL & 2X/3X. Please order accordingly