Heritage HWB8511 8.5 in. x 11 in. Wirebound Sketchbook - vertical - 80 Sheets Ideal for sketching&#44; drawing&#44; and writing&#44; these all-purpose sketchbooks feature artist-quality Each book contains white&#44; acid and chlorine-free&#44; unlined paper that is lightly textured for The 70 lb. (110 gsm) paper erases cleanly&#44; has high opacity&#44; and minimal bleed-through when used Wirebound Version features double-wire spiral binding&#44; hard covers that flip back-to-back to provide 80 sheets/160 pages&#44; perforated for easy removal.