The Whisper's lightweight sunglass design and casual appeal make it a perfect choice for any type of outdoor activity. Built around the patent pending Interlock Interchangeable lens system the Whisper boasts Polarized TLT Carbonic lenses, megol temple pads and a small fitting Grilamid TR90 frame. 14 replacement lens tints to choose from and as always the Whisper is backed by Smith's lifetime warranty.