The sunglasses have adjustable temples and nose pads (to ensure a perfect fit every time). The frames are very lightweight and you can change the lenses for any type of light situation. All lenses block 100% of UV rays, are shatter-resistant poly-carbonate and remain fog free. Black Gloss frame, Polarized Gray/Blue Flash lenses. Only one pair of lenses is included (two eyeballs worth) Lifetime warranty.  Hard case included that also carries spare lenses.  Microfiber lens cloth included.  Available in Polarized with AR Coating and mirrored lenses. Optical quality hinges for durability.  Interchangeable lenses manage any light condition with ease.  Durable polycarbonate lenses offer 100% UV protection.  Grilamid Frame is lightweight, strong and flexible.