Xs = 3 copies, S = 6 copies, M = 18 copies, L = 36 copies, Xl = 54 copies, Xxl = 72 copies, Xxxl = 108 copies. Package Content: 3 pieces of writing notebooks. Keep for a Long Term Use: can be folded freely without creases, convenient to flip pages portable for backpack or handbag use. Proper Size: approximately 14 x 21 cm/ 5.5 x 8.3 inches 100 pages (50 sheets) per book soft and smooth to write. Widely Applicable: suitable for home, trips, office or school ideal for journaling, note taking, scrapbooking. Nice Workmanship: sturdy paper cover with 80 grams thickened paper double-sided use without inking. weight: 0.9 pounds.