13cm (height) x 20cm (width) 【Large Capacity for Ample Storage】Holds over 40 pens. For elementary school students, it can hold compasses, multiplication flashcards, and glue. For adults, it can hold calculators and scissors, and for women, it can be used as a cosmetic pouch. 【Transforms into a Compact Size When Zipped】The size-adjustable zipper allows it to become thinner when the capacity is less, making it easy to carry neatly in your bag without taking up much space. 【Timeless Colors and Stain-Resistant Water Repellent Finish】Color variations that won't bore even upper-grade elementary school students. The chic colors and water-repellent finish protect against stains for junior high school students and adults. 【Mesh Pocket for Sorting Small Items】Rulers, sticky notes, USB drives, correction tape, tape glue, etc. can be stored neatly without scattering. 【Wide Range of Uses Beyond a Pen Case】For women, it can be used as a cosmetic pouch or sewing kit. It's also convenient for carrying emergency supplies such as medicine and first-aid items, depending on how you use it.