Slim size for easy carrying; Slim and lightweight binder that can be neatly stored in your bag. Easy to carry around for daily school or school. The folding binder / cover features a new mechanism and smart ring that rotates 360 degrees. It can be folded back to save space when viewing or writing. The intermediate paper can be replaced smoothly / the binding opens wide and closes with a single touch, so you can replace the inner paper smoothly. Fits B5 size (26 holes) loose leaf Size: B5-S; Number of Holes: 26 holes; External Dimensions (Height, Width, Back Width): 268, 192, 13; Cover: R-PP; Maximum Capacity: 25; Set Contents: 10 Inner Paper, Index; Inner Paper: No-836BTN