Smith Embark Sunglasses Eyes on the Prize Chroma Pop Glacier Photochromic is the tech that sets the Embark apart from standard glacier glasses. The lens responds to both UV and visible light, not just UV like a traditional photochromic lens, which means it transitions accurately even on overcast snowfields where UV is low but brightness is still punishing. The transmission range runs from 45% to 7%, covering everything from a shaded skin track to a high-noon glacier crossing. Ventilated side shields block peripheral light and blowing snow without locking out airflow, and they pull off cleanly when you push the pace and need more ventilation. A goggle-inspired retainer strap and Megol nose and temple pads keep the frame locked in place, whether you're skinning uphill or charging down. The Evolve bio-based frame keeps weight low without sacrificing durability. If you spend time above treeline and want one pair of glasses that handles the full range of alpine light, the Embark is a straightforward choice. Features Chroma Pop Glacier Photochromic Lens activates on UV and visible light for a 45%-7% transmission range, adapting reliably in flat light and overcast conditions where standard photochromic lenses fall behind Chroma Pop Color and Contrast Enhancement runs across the full tint range, so color accuracy and definition stay consistent whether the lens is at its lightest or darkest setting Removable Ventilated Side Shields add peripheral coverage against snow, wind, and glare, and detach quickly when you need airflow during high-output efforts Megol Temple and Nose Pads grip skin and increase hold with moisture, keeping the frame in place during technical movement on snow or rock Auto Lock Hinges hold the temples open for one-hand donning and doffing with gloves on Evolve Bio-Based Frame incorporates bio-based material into the injected polymer construction for a lightweight, durable build with a reduced environmental footprint | Smith | Embark Sunglasses Men's In Matte Black/chromapop Black