<!--ProdInc[300313098]/Mall:[backcountry_US]-->Julbos Ultimate Cover Sunglasses offer peak-performance visibility and versatility for mountaineering, alpine climbing, backcountry touring, or even training in lower altitudes. The nose cover and side shields are removable when were out of the alpine suns gaze, and the nose cover gives cover to cold wind as well as harmful UV rays. Even better, the REACTIV photochromic lens gives extra shade when were on sunny summits, and less shade when were trekking through shady trees, while the Spectron lens is lighter and offers shock resistance. <h3>Details</h3> Ultimate Sunglasses specialized for mountaineering, alpine, and training Photochromic REACIV lens adjusts tint according to the sun conditions Spectron lenses are lighter and offer shock resistance Removable spandex side shields and nose guard for sun, wind, and cold Adjustable CustomFit temples with Grip Tech ensure a stay-put fit 3D Nose keeps a flawless hold with or without a helmet Please see size chart for lens tint information Item #JULM07N <h3>Tech Specs</h3> Lens : REACTIV 1-3, REACTIV 2-4, Spectron 3, Spectron 4 Polarized : not polarized Photochromic : [Spectron] no, [REACTIV] yes Interchangeable Lens : yes Frame : Plastic Nose/Temple Pads : grip tech Face Size : medium Base Curve : 6 Frame Dimensions : [lens/bridge/temple] 50 / 14 / 130mm Manufacturer Warranty : lifetime Activity : mountain biking, cycling