360° Opening Planner Easy to write in every corner, a double-ring diary. A5 slim size with a rubber band. The "Ring Diary Slim" has a rubber band to prevent it from opening in your bag. Cutting the top of the clear pocket on the back cover can also be used as a bookmark. January 2026 edition. Includes 5 clear files. Product No. 90 Ring Diary Slim (Monthly Block & Left) 1,650 yen (tax included) ISBN978-4-471-85090-6 Published September 20, 2025