Unlike most glacial glasses, the Smith Embark ChromaPop Polarized Sunglasses are something we'd wear on the drive to the trailhead as well as the alpine. The side shields are an absolute necessity in the alpine because sunlight's bouncing off snow and rocks, and they're removable whenever we aren't in the alpine. These sunglasses feature Smith's best optics available, too.Smith sunglasses styled glacial and alpine pursuitsChromaPop contrasts color to make natural colors popPolarized cuts glare for crystal clear visibilityAnti-fog and hydroleophobic coatings keep smudges and fog at bayQuickFit temples and nose pads provide a secure fitAutoLock hinges stay secure open or closedIncludes removable side shields, retainer strap, microfiber bag, and hard caseResponsible CollectionRecycled/RepurposedLensChromaPopPolarizedyesFrameEvolveNose/Temple PadshydrophilicCase Includedmicrofiber pouchFace SizemediumBase Curve6Frame Dimensions[lens/bridge/temple] 58 / 16 / 145mmActivitymountaineering, hikingManufacturer Warranty[sunglasses, goggles] limited lifetime, [helmets] limited 3 years, [apparel, accessories] limited 1 year