. The low profile helmet features centrally located front and rear ventilation apertures covered in mesh, with thermo regulation paint for the centre panel. The GRpx technology harness takes the superb fit to the next level. Kitemarked to PAS015:2011 and certified by SEI to ASTM F1163. These helmets do not have removable liners and are now on clearance. All new. Please note this item is non-returnable/non-refundable.