Reading tracker set of 4Reading tracker set of 4 Reduce eye fatigue! Concentrate on reading! By limiting the amount of text in your field of vision, the amount of information is reduced, making text easier to read and understand. It also helps prevent skipping over text! This is the perfect item for people who are not good at reading text or who are concerned about their concentration. It can also be used as a bookmark when not in use. It comes in a set of four different