Short concert-goers rejoice!!

Someone has invented “periscope glasses”, which enable the wearer to see over tall people at music festivals and other large gatherings. The glasses add one-foot (30.5cm) of height to the wearers’ normal eye-level. How do they work?

The glasses include a small mirror positioned at the bottom of its frame, positioned upwards at a 45-degree angle towards a large mirror (which rests atop a 12-inch stick) which points outwards.