The Julbo Ultra Sunglasses have the Zebra Soft lens, the ideal light-sensitive lens for adventure sports, mountain biking, trail running,  climbing and trekking.
The special Zebra light lens changes depth of tint from a light yellow category one tint, to a full category three brown tint in under 30 seconds. 
That makes them great for mountain biking or running through shady woodland sections, the light yellow tint reducing shadow and the large panoramic rimless lenses keeping the mud and midges out of your eyes. 

As you pass in to the bright sunshine they seamlessly transform to a mid Cat two tint and finally for the brightest sunshine Cat three.

The polycarbonate lens is flexible and tough, so it won’t shatter if you take a tumble
• Lens size: 70 mm
• Bridge size: 20 mm
• Temple length: 125 mm
• Panoramic lenses for an extra-wide field of view
• Adjustable natural airflow with 2 positions due to the cut of the lenses
• Elastomer shock absorbers at sides for maximum protection
• Supple antishock insert will remain in position on nose
• Elastomer insert at the temple end for optimum hold
• Elasticated extra-flat cord
• Amplitude: Cat 1-3
• High-speed reaction: 22-28 seconds
• Exceptional anti-mist treatment