This Classic Bamboo Reader is a timeless, traditional shape. Perfect for those seeking a look that will never go out of style. Tortoise Lens / Natural Bamboo Arms / Reader Lens (Magnification) Shape: Traditional Specs Lens: Optical quality + scratch resistant aspherical lens. Material: Lightweight eco-friendly frames are made with 60-75% recycled & reprocessed content. Temples are made with natural bamboo. Lens Width (in mm): 50 Bridge Width (in mm): 19.5 Temple Length (in mm): 148 Accessories: Every pair includes a woven drawstring case and cleaning cloth.