Acetate - a synthetic material composed mainly of cellulose, commonly
used in sunglasses for it’s greater sensitivity to high temperatures during shaping, while also known for having greater strength when cold or wet.
Bridge - The area between lenses or area over the nose connecting the two lenses. normally expressed in (mm).
CR39 lens - an optical quality plastic made of hard resin, it is considered the best plastic for lenses. It weights half as much as glass and exceeds FDA requirements for impact-resistance by 500%.
Gradient or fade - A tint that is applied to lenses, making the top portion of the lens darker than the bottom. many standard soda sunglasses lenses have a gradient, which provides greater clarity and enhanced vision.
Handmade - process by which acetate sunglasses are made, referring to the hand tooling and polishing required to create the high end finished product.
See our complete list on our Sunglossory of Sunglass terms here: http://www.sodasunglasses.com/sunglossory.html