Acrylic lens, plastic frame with spring hinges Frame width about 5 1/2 inches (139mm) Lens width about 1 15/16 inches (49mm) Lens height about 1 11/16 inches (42mm) Bridge(DBL) about 9/16 inches (14mm) Temple length about 5 1/2 inches (140mm) EYEKEEPER ONLINE PROGRESSIVE MULTIFOCUS GLASSES - 5-layer anti-reflective coating to minimize glare from screens and fluorescent lighting. Not only for looking far, but also for computer and looking close. (up degree for looking far, middle degree for computer, down degree for looking close)