Adjustable reading glasses feature a magnet that allows you to easily attach and un-attach the lenses when moving the glasses into positions. Flexible stems allow for a wide range of movement and sturdy clips at the end of each stem hook firmly and safely on your visor. CR39 plastic lenses are protected with a scratch resistant coating. Updated model includes protective storage case with attachment clip. In tortoise. Sizes 2.0X, 3.0X. USA.