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. Each strip measures 7-1/4" x 1-1/4". Each pack includes 12 reading guides. Sold as 2 packs for a total of 24 reading guides.