The bifocals are "inner bifocal" which means they are placed on the inside of the lens, which makes it less visible to OTHERS when you're wearing bifocals.All of our bifocal sunglasses are rated UV protection and include a free microfiber pouch for clean and storing your bifocal sunglasses. Products Description: Built in bifocal smoke lens and Include 1 microfiber pouch 4 Magnification Strength,+2.0No spring hinge. Products Details: Size: Middle; Frame Color: 1 Black Material: Plastic; Shape: Cat-eye; Rim: Full rim; UV Protection & Anti-Scratch lens coating