Directional venting of the outer shell and open structure fabrics keep air circulating all around the leg. 4D IMPACT PROTECTION: FlexFit TPU moulded outer with directional venting to protected areas. Air Motion 3D mesh encourages airflow. Zonal EVA foam buffers impacts to the most vulnerable areas. Shock absorbing TPG perforated foam inner with waffle weave wicking lining lighter than neoprene and low water absorption, remaining protective even when warm. PIERCE PROOF: Fine metal mesh lined ventilation channels prevent penetration of debris. Further detail: smooth tough outer to deflect blows, recessed stitching, elasticated straps with adjustable pin fastening. Set of 2.