Bollé Pathfinder BS138009 sunglasses are purpose-built mountain/glacier eyewear offering adaptive photochromic protection and secure all-day stability. Designed for high-altitude conditions, they combine advanced lens technology with a lightweight, grippy frame. Key attributes: Black | Nylon | Photochromic lenses (Phantom) | 100% UV protection | High-impact resistance | Platinum anti-fog coating | Thermogrip rubber on temple tips and nosepiece | Adjustable 3-position nose piece | Self-locking/snap hinges | Detachable cord included | Square glacier frame | Enveloping/wraparound shape | Removable side shields | Perforated temples with cord hole | Dimensions & fit: Lens width: 61 mm | Lens height: 53 mm | Temple length: 130 mm | Bridge: 15 mm | Weight: 36 g | Medium fit | Composition & care: Nylon frame | Polycarbonate lenses | Thermogrip thermoplastic rubber inserts | Wipe lenses with a microfibre cloth and lens cleaner; store in a protective case when not in use; avoid exposure to solvents and high heat.