GLARE-CUTTING POLARIZED LENSES: Polarized sunglasses eliminate glare from shiny objects such as chrome bumpers, car hoods, mirrors, & water. They provide 100% UV protection and unsurpassed clarity. Polarized sunglasses are the best for all outdoor activities. IMPACT RESISTANT POLYCARBONATE LENSES: Polycarbonate is an impact resistant thermoplastic that is virtually unbreakable and extremely scratch resistant. Have you tried to break a CD (compact disc) before? It can’t be done! CDs are made of polycarbonate. LEATHERETTE SIDE SHIELDS: Protects your eyes from debris, wind and glare at all angles. Glare from the snow can easily be reflected from the inside of casual sunglasses. The Altitude offers protection from the sun in front and behind you. ATTACHED NECK STRING: The Altitude conveniently hangs around your neck when not in use. FITS: Small to Medium head sizes. If you wear a hat size is 6 3/4 to 7 1/4, or if you wear an XS, SM or Medium helmet, the Altitude should fit you just fine. These leatherThese sunglasses were extremely popular back in the 80's and are back again. Side gaskets are attached to the frame to seal out wind, dust and debris. Also includes a string attached to the frame so you can hang the sunglasses around your neck…cool! FREE microfiber cleaning case with drawstring included also ($5 value) Fit Small to Medium Head Sizes.