① Product Name: A5-size notebook cover with removable pen case Size: Approximately 23.5cm (height) x 17cm (width) x 3.5cm (depth) (Closed) Compatible notebook size: A5 size ② Muji mesh bag-in-bag, A4 size. This item is convenient for organizing the inside of your bag. It's lightweight and made of breathable mesh material, making it easy to see the contents. There is some wear and tear from use. ※ Due to shipping considerations, we may fold it for delivery. Bag-in-bag [Size] A4 size Outer dimensions: Approximately width 24cm x height 34cm [Material] Nylon mesh