This is a Chinese celebratory envelope called a "Hongbao" (紅包). It's a horizontal envelope, and the paper-cut butterfly in the center acts as a clasp to close the flap. The flap itself is a paper-cut design of flowers, creating a very festive atmosphere. Size: 8.8 x 18.0 cm (about 1 cm longer than the typical Hongbao size), set of 4, thick type (approx. 1.3 mm thick). *This type is made by folding a single sheet of paper, so there is no adhesive. (It is securely held in place by the cut-out parts, so it won't come apart.) It's large enough to hold a Japanese 10,000 yen bill or a Chinese 100 yuan bill without folding. Since there is no writing, it can be used in any situation. It can also be used as an envelope for New Year's money or letters. *Our Hongbao are inspected one by one. (Items with printing defects or adhesive issues are excluded.) *Due to the printing design, some glitter may slightly adhere to your hands. Please understand.