Get ultimate flexibility when you choose refillable Five Star FLEX Notebinders. Three TechLock hybrid rings let you add, remove and rearrange filler paper in an instantuse Five Star Filler Paper to derive the full benefits of the Five Star Study App, which allows you to scan your work and sync it to Google Drive so you can access it anywhere, from any device. Within the app, you can also create instant flashcards to help you ace the next exam. Between the ultra-reliable TechLock rings and the notebinder's durable plastic covers, all your hardcopy pages stay safe, too. Lasts all year. Guaranteed! 1/2" TechLock Hybrid RingHolds up to 100 sheets. Pocket Sized: No; Book-Binding Type: Hybrid Ring; Book-Binding Details: Three-Hole TechLock Hybrid Ring: Flexible Cover; Book-Binding Edge: Side.