Features of the Electric Birch Sunglasses Frame: 4 base Mazzucchelli acetate frame with 5 barrel hinge and heat tempered wire temple inserts. Optics: 4 base melanin infused polycarbonate lenses. 100% UV protection. Up to 98% HEV blue light protection. Polarized: 99.9% premium glAre reduction, relaxed/soothing eye feeling, True color perception, and scratch resistance. Additional pro lens coatings that include anti-reflective, dirt-repellent and water-repellent properties. Custom wire core detailing on temples Includes Custom Hard Case and Microfiber Sunglass Bag. Designed in California. Made in Italy. Lifetime Warranty. Measurement: 45h - 139w - 143l (Small/Medium Sized Frame)