TITAN PRO D30 KNEE GUARD - BLKDirt bike knee guards with D3O armor The Titan Pro D3O Knee Guards integrate a highly ventilated PP exoskeleton with specifically molded D3O protection underneath. The Variable Axis Hinge provides an increased range of motion while the three straps hold the pads close to the body for added security. The Posi Lock buckle system features one time strap adjustment, and multi layer molded foam provides comfort between the guards and your skin. For the