These kumacross 20 sunglasses withstand an active lifestyle thanks to robust materials and high quality lenses the ultra light frames feature quick release temples that pop apart on impact rather than breakinglst polarizedlens description special lens for light reflection from water ice snow etcdimensions are as follows lens width bridge lens height temple 640mm 130mm 410mm 1400mm featuresspx flex zoneswrap around viewwrap around protectiongrip systemsquick release hingeventilatio