Julbo Vesta Goggle Double Spherical Lens Shape with Anti-fog Lens Treatment Anatomic Frame & Dual soft foam: 2 layers of multi-density foam for comfort, homogeneous hold & shock absorption with soft touch material on contact zones. Exceptional Air Flow & Easy Clip Axis strap system : Pivoting joint on strap for improved helmet compatibility. Symmetrical adjustment : two loops either side of the strap for symmetrical adjustment in the blink of an eye. NXT Falcon Lens: Clear vision at all times. Photochromic: (category 2 to 3) Polarizing: eliminates glare for better reading of relief.