With lightweight aerodynamic speed styling the Julbo Race (w/ Zebra Photochromic Lenses) features an exclusive photochromic lens that adapts to wide variations in light intensity making it ideal for all day use. This Zebra® lens delivers progressive light protection ranging from 3% to 43% of visible light transmitted and adjusts to 50% of its capacity within 28 seconds. Offering 100% UVA UVB and UVC protection a performance fit is targeted with an adjustable parabolic nose system flexible - shock-proof and non-slip nose insert high wrap lens geometry (HCD) with extra-wide field of vision and shock-proof elastomer absorber at the temple and ear arm end. From dawn to dusk sea to summit this speed demon is built for a lightweight fit that keeps your eyes feeling completely relaxed.