Library Store Premium Repositionable Self-Adhesive Book Pockets with reinforced sides and top edges outlast other book pockets! Economical Deep Low Back Book Pockets feature a lower back panel and taller, 3 3/4 in. pocket TLS book pockets feature unique fold-over construction with reinforced top and side edges to prevent wear and extend the life of the pocket Made from highest grade, #77 pale cream, acid-free, high-fiber content paper to insure tear resistance and durability Repositionable, self-adhesive backing features a full-coverage, delayed action, acid-free adhesive that becomes permanent in a few hours Unprinted front pocket offers space for labeling Measures 4 1/2 in. H x 3 1/2 in. W with a 3 3/4 in. D pocket 100 per package