Reading Guide products are designed to aid students and adults with the following difficulties: skipping words, skipping lines, reversing letters, transposing letters, losing your place, re-reading lines, squinting, concentration, comprehension, red/watery eyes and reading fatigue. Easily track print through transparent tinted window. Details:Each strip measures 3.75" x 7.25"Bundle includes 12 reading guidesPlasticEasily track print through transparent tinted window Handy see through guide strips for reading