Rocketbook Core Executive A5 Reusable Smart Notebook 36 Pages Dot Grid With Erasable Pen Teal 515907The Rocketbook Core is designed for the classroom, office and personal mission. The Core is a reusable pen and paper notebook with dot grid templates that connect to cloud services. With 32 futuristic pages made with patented reusable Core technology, the synthetic paper allows you to write smoothly with any Pilot FriXion pen, marker or highlighter, then wipe clean with a damp cloth to reuse again. The free Rocketbook app allows you to save notes and