Please take a look at the profile section. There are important notes listed there. This is a durable laminated fabric abacus case for 23-digit abacuses. It can be changed to fit a 27-digit abacus. It is thinner than commercially available products. The material is cotton with a vinyl coating, so it won't get wet inside in light rain. Size: For 23-digit abacus: Length approx. 36cm x Width 10cm To make it easier to take out the abacus, the end of the abacus sticks out about 2cm from the bag. The closure is Velcro, which is easy for even small children to open and close, as snaps can be difficult to use and may hit the beads. *Since we cut in bulk, the pattern may appear differently from the image. Please understand. Instant purchase is OK. However, if you have any of the following changes, please contact us before or immediately after purchase. *Can be changed to 27-digit abacus (for 27-digit abacus: Length approx. 42cm x Width 10cm). Also, you can add a loop to hang it on a school bag or a hook on a desk. (See the 3rd reference photo) Please contact us before purchasing. If you purchase without contacting us about the changes, we will send you the 23-digit abacus case without a loop. Please note that we will not exchange it after shipping. We carefully finish each item with care, but as these are handmade by amateurs, there may be slight imperfections in the stitching or alignment. Please refrain from purchasing if you are looking for perfection. We appreciate your understanding before purchasing. #AbacusCase #ElementarySchoolStudents Pattern/Design: Checkered