A real glass lens resists scratching and provides a crystal-clear view — this one is protected by a heavy-duty case that also serves as a handle while children are viewing. Easy for children to manipulate, the thick glass lens slides in and out of the heavy-duty plastic case on a sturdy pivot. This 6X magnifier is a rugged choice for indoor or outdoor observation. Glass is 2½" dia.; closed length of case is 3½". Ages 4 and up.