This is a cover I made to organize Kumon worksheets. I used white cardstock for the base and bound it with string. Aiming for a Kumon worksheet tower, I organized them here, and it was easy for my child to understand. This is for Japanese language worksheets only. Some papers are not attached to the backing board, as shown in the third photo. I will include 10 strings. Some areas reinforced with tape have faded slightly. Otherwise, it's in good condition as it was only used for storage. This is handmade by an amateur, so please understand. Thank you for looking.