Thank you for viewing. This is a set of 10 cardboard boxes. They are sized to perfectly fit a credit card-sized card, and can be used for storing trading cards, point cards, business cards, etc., or for packing when shipping on Mercari. Made of sturdy, thick paper material, they can also be used with confidence as packing materials to prevent bending or crushing. 【Product Details】 ・Size (inner dimensions, approx.): Length x Width x Height = 5.1cm x 11cm x 2.2cm (approx. 2.4cm when the lid is closed) ※ Fits a credit card (standard size). ・Quantity: 10 sets ・Material: Thick paper (cardboard) Inside: White, Outside: Gray 【Examples of Use】 ・Storage of trading cards, point cards, and medical examination cards ・Protective boxes for Mercari/flea market shipping ・Accessory and small item cases ・Packaging for handmade items ※Boxes only are for sale. ※Cards in the photos are not included. ※Shipped unassembled. ※Price reductions are not possible. ※A different quantity (25 sheets) is also available. Please see my profile. Immediate purchase is welcome!