Julbo Polar Goggle Double Cylindrical Lens Shape, Specton Cat. 3 Polarized Lens Ventilated Lens & Exceptional Air Flow Anatomic Frame & Dual Soft Foam: 2 layers of multi-density foam for comfort, homogeneous hold & shock absorption with soft touch material on contact zones. Axis strap system : Pivoting joint on strap for improved helmet compatibility. Full silicone strap: dual silicone strap to facilitate goggle hold all the way round the helmet with an Easy Clip.