Smith Optics Interlock Trace Sunglasses (Black Fade with Polarized Gray Lens)

Stylish sunglass with patented interchangeable lens system
Arms swivel open to release lenses and swivel back to lock them
Grilamid TR-90 frame with hydrophilic Megol on nose and temple pads
TLT carbonic lens technology provides distortion-free clarity
Available in medium fit; backed by lifetime warranty With polarized carbonic lenses, Smith's Interlock Trace Sunglasses make a day out on the water easier on your eyes. If you're not water-bound, change your lenses using these shades' new INTERLOCK Interchange system. Simply twist the temple arm to open the frame a crack, switch lenses, and twist the arm back for a secure close. The Interlock Trace Sunglasses' strong, flexible frame sur More »