Polycarbonate Lenses
SOS's shatterproof polycarbonate lenses are optically correct for zero distortion to provide outstanding optical performance and enhanced vision in any lighting condition. Polycarbonate is the newest development in lens materials. It is a type of LEXAN from G.E., the same material used for bullet resistant glass in autos. It is such a hard material that a special diamond grinding wheel must be used to cut the lens. To form the glasses the material is melted and then force injected into a special mold. The polycarbonate material is naturally UV absorbing, so even the clear lenses are 100% Ultraviolet protected.
Polycarbonite in certain glasses is actually approved for use as safety glasses. Polycarbonate lenses are lightweight, durable, impact-resistant and the most scratch-resistant of the plastics. They are virtually break proof. Polycarbonate eyewear is the only approved eye protection for most major Police & Fire Departments. All Survival Optics Sunglasses are warranted by the manufacturer to exceed Shatter-Resistant Safety Standards. The lenses on all the Military, Sports Wrap and Xchangeable styles are 2.00mm thick as are some of the Goggles and Gripz styles the rest are a minimum of 1.75. Polarized styles have lenses 1.1mm (0.75 Blue Mirror)
REPLACEMENT LENSES are readily available for all the Xchangeable lens sunglass styles, should you need to order we will place a 1 day listing on the sunglass accessory page
Lens Tints and Coatings
Smoke, Grey and Grey-Green Tints
The most common type of lens colour. They are effective at blocking glare without changing color perception, making them a good choice for all-weather use.
Brown / Amber Tints
Especially good at blocking the blue light commonly found in diffused light such as one might experience on a cloudy day offers high contrast. Amber can improve both contrast and depth perception, and is a good all-around choice if you live in an area with changeable weather patterns and for fishing in fresh water rivers and lakes.
Yellow / Amber Tints
Improve contrast and give a sensation of heightened visual acuity. So-called "Driving" lenses are usually amber or yellow-brown.
Clear Lens Tint
Clear Lenses are good for greater depth perception, low light conditions and still offer 100% UV protection.
Flash mirror
Flash Mirror lenses (XLT) are viewed by the wearer as grey lenses on the inside. There are many mirror colours available for the outside of the lens.
Red / Orange Tints
Offers increased depth perception, ideal for most light conditions especially in the transition from sun to shade. Often called shooting lenses.
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