A full-featured backcountry goggle that's perfect for medium to small sized heads. To keep fogging at bay when working hard up steep skin tracks, Julbo's patented lens system tilts forward for maximum ventilation, then snaps back in place to seal out flurries on your powder run back down. The addition double lens system and anti-fog coating double up the fog protection. These googles also feature Julbo's high-tech REACTIV photochromic lens, which naturally adjust the tint with varying lighting conditions, making transitions from sun to shade totally seamless. A silicone coating on the strap ensures these stay firmly in place on your helmet. Perfect for big backcountry days in the Sierras.