LASTS ALL YEAR. GUARANTEED!* Scan, study and organize your notes with the Five Star App. Create instant flashcards and sync your notes to Google Drive to access them anywhere from any device. This Five Star 1 Subject Notebook has 100 double-sided, graph ruled sheets that fight ink bleed and are perforated for easy tear out. 4 squares per inch, ideal for graphing, charts and engineering projects. Sheets measure 8-1/2" x 11" when torn out. Tough pockets help prevent tears and hold 8-1/2" x 11" loose sheets. The front cover is water-resistant to help protect your notes all year. Spiral Lock wire helps prevent snags on clothes and backpacks. Made with SFI certified paper. Notebook is recyclable – just remove the reinforcement tape on the pocket and recycle the rest! Available in Gray. *Guarantee is valid for one year from purchase date. Does not cover misuse.