Features: Engineered with smooth, not irritating metal plastic rings and detachable binding, this refillable notebook eliminates hand discomfort during extended writing while allowing customizable page organization. Features smooth paper inserts, reinforced friendly polymer covers, and scratch resistant plated rings that securely hold 120 sheets without snagging or warping. Ideal for university students compiling lecture notes, professional maintaining projects, and users for sustainable stationery solution. Perfect for conference room brainstorming, library research, travel journaling, or hybrided work setups requiring adaptable documentation tools. It combines matte finish recycled covers with precise engineered binding mechanisms, creating a durability multi year companion for organized thinkers. Specifications: Component: Paper + Metal + Plastic Item：Notebook. Size: about 17.3x22.5cm/6.81x8.86in ; 20.7x27.4cm/ 8.15x10.79in Color: 2 color optional Practicality:Detachable makes the pages easy to disassemble and rearrange Package Includes: 1PC detachable Note book note: Due to the problem of lighting effect there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurment.