LASTS ALL YEAR. GUARANTEED! Guarantee is valid for one year from purchase or delivery date, whichever is longer. Does not cover misuse. Doodle design features fun and colorful hand-drawn sketches Scan, study and organize your notes with the Five Star Study App. Create instant flashcards and sync your notes to Google Drive to access them anywhere from any device. 1 subject notebook has 80 double-sided, wide ruled sheets that fight ink bleed and are perforated for easy tear out. Sheets measure 8" x 10-1/2"​ when torn out. Tough pockets help prevent tears and hold 8" x 10-1/2"​ loose sheets. Durable, plastic front cover is water-resistant to help protect your notes and our Spiral Lock wire helps prevent snags on clothes and backpacks.