S = 16-pack, M = 32-pack. This bulk lined notebook pack includes 16 individual notebooks, each with 60 thick high-quality sheets (120 pages) for a total of 960 writing pages. Each notebook measures 8.3"" x 5.5"" in classic A5 size, compact enough to slip into a purse, backpack, or briefcase while providing ample writing area. The college-ruled thick durable paper resists ink bleed-through for a smooth writing experience with pens, pencils, or markers. Soft covers allow for personalizing with stickers, stamps, or drawings, while sturdy binding enables 180degree(s) flat laying for comfortable uninterrupted writing. Suitable as a daily diary, travel journal, class or work notebook, idea sketchbook, or gift for students, teachers, artists, and journaling enthusiasts. Weight: 2.99 pounds.