The Clifden is the ultimate ski and mountaineering glass built to protect against harsh winter elements. Side shields and a nose blocker help keep the wind and sun from entering around the sides of the frame, and an integrated leash has been added to keep them safe. Unobtainium nosepads keep the glasses securely in place, and Prizm lens technology ensures you see in greater detail with crisp and enhanced clarity.Lens: Designed for the mountains, this lens works well in variable and overcast conditions while increasing contrast and reducing glare. The base lens tint is rose. Prizm technology blocks specific wavelengths of light while boosting others to provide maximum contrast and enhanced visibility. This greater clarity results in reduced reaction times and increased performance over a wide range of light conditions.VLT: 17% (CAT 3) - Visual Light Transmission, VLT, refers to the amount of light that penetrates a lens. A low percentage means less light passes through and a higher percentage lets an increased amount of light through. FeaturesFit: Wide - High Bridge Size: Medium (lens width 54mm bridge height 17mm)Functional sport design built for the ultimate protection in high light exposure Removable bridge blocker and side shields designed to block glare Integrated 20” lightweight, flexible, coated woven steel leash keeps glasses safeO Matter frame material is lightweight, durable and offers all-day comfort Unobtanium nosepad is non-slip and gives increased grip with perspirationHDO (High Definition Optics) lenses are impact resistant while letting you see with crystal clear clarityPrizm lenses optimise contrast and enhance color enabling you can see in greater detailIridium lens coating reduces glarePlutonite lens material provides UV Protection filtering out 100% of all UVA, UVB up to 400nm Comes complete with a microfibre cleaning cloth