Julbo Revolution OTG Goggles Zebra lens: NXT material w/clarity of glass, durability of anti-ballistic material, Ultra-light Photochromic (2-4) Lens with Anti-fog coating Full silicone strap to hold the goggle all the way round the helmet with an Anatomic Frame, Air flow and Anti-fog coating on the Lens Symmetrical adjustment: two loops either side of the strap for symmetrical adjustment Extended outrigger : 15 mm extension on each side of the goggles to adapt to all helmets & a guarantee uniform hold on the face An OTG Foam to create space for the glasses and a Dual soft foam for comfort