Whether you're settling into a grinder of a climb on your mountain bike in the early hours of the morning or making the final scrambly moves to the summit at dusk, you can rely on the Tifosi Crit Photochromic Sunglasses to keep your vision unabated throughout the day. Photochromic lenses adapt to the ever-changing light, and the vented design keeps cool air pulling through the sunglasses to keep your vision clear of fog and sweat. And since going hard can make even the best fitting sunglasses slip down your face, Tifosi equipped these shades with adjustable rubber nose and temple pads to ensure a snug and secure fit.