Clips to the brim of any hat! Perfect for the tackle box, sewing kit or first aid kit. Moves with line of focus. Distortion-free viewing. Wide field of vision. Adjustable lens angle. Brings work closer into focus than regular magnifying glasses . Adjustable lens frame swings up and down, or can be locked in place. Modern, open design assures unimpaired visio. Snap-out interchangeable lenses. The quality of the MagEyes lens easily distinguishes it from others. The costly precision-controlled manufacturing process produces clear optic-grade acrylic dual-lenses, free of distortion or irregularities.