What Our Gearhead(R) Experts Are Saying:"I've used a lot of goggles over the years, and the Sentry Prime SIGMAs might be my favorite. The magnetic lens system is super slick-easy to swap, even with gloves on-and the SIGMA Photo lens makes a huge difference in flat light. I love the low-profile fit and wide field of view too."We never ride without clarity, and the Salomon Sentry Prime SIGMA Photochromic Goggles are built to deliver it in all conditions. These premium goggles blend performance-focused tech with an effortless style, and the lens-swapping system is as fast and foolproof as it gets. With strong magnets and mechanical latches, the interchangeable lens system lets us quickly adapt to changing weather without missing a beat. The included SIGMA(TM) Photochromic lens dynamically adjusts to light, sharpening contrast while reducing eye fatigue in shifting alpine conditions. An extra SIGMA(TM) Light Blue lens adds even more versatility. With a low-profile frame and Custom ID Fit foam, these goggles mold to your face shape for all-day comfort. Add in airflow-driven anti-fog tech, seamless helmet compatibility, and a wide, silicone-backed strap, and we've got a goggle we trust in everything from storm days to spring laps.