Size: Height: 7cm, Width: approx. 20.5cm This is a flat pen case without a gusset. It uses a 20cm zipper, so new pencils won't fit, but it can hold 4-5 pens of a typical thickness and length. The zipper on this product is not YKK brand. It is 50 yen cheaper than other similar products, but the slider may feel slightly different. Please understand this before purchasing. Please understand that this is a handmade item before purchasing. Please contact us for bulk purchases. #handmadegallery #flatpencase #slimpen case