The vintage sunglasses temples are hand sculpted and adorned with a metallic icon. The face front has metal studs flanking the lenses. Smith Chemist Sunglasses are done up right with handmade acetate fashion frames that add rich color and texture to your life. Spring hinges and wire core temples provide the sunglasses with a perfect, customizable fit. This attention to detail is further complimented by Smith Optics TLT (Tapered Lens Technology), a precise shaping of the lens profile to eliminate distortion and deliver crisp, perfect vision. Fitted within a 6 base lens curve, the Smith Chemist is a piece you won't want to let the kid next door scoop before you. These Smith Optics Sunglasses are backed by Smith's lifetime warranty.