Precision engineered for a balance of minimum framework and maximum UV protection Oakley's Polarized Why 8.2 Sunglasses feature a comfortable fit and refined style that fit any casual or formal outdoor event. It consists of a sleek and incredibly lightweight C-5 alloy frame connected to polarized Plutonite lenses for an open edge minimalist design that doesn't block your facial features. While most sunglasses manufacturers rely on sandwiching a layer of polarized film between two lenses and calling it good Oakley designs their polarized lenses through a special liquid fusion technology that introduces the polarized filter while the lens material is still in a hot liquid state bonding the film at a molecular level that doesn't leave you peering through the glue residue that other polarized lens manufacturers leave behind. It's one of the reasons that Oakley eyewear recently dominated Private Pilot Magazine's Sunglass Optics Shootout 2 in an extensive variety of performance categories. The Polarized Why 8.2 profile is similar to Oakley's Why 8.0 and Why 8.1 sunglasses but the lenses on the Why 8.2 Sunglasses have a squared shape--which means that on the very smallest of scales you would notice that the Why 8.2 was slightly heavier than its rounded-lens counterparts.