Description: 1. Material: copper 2. Process: chrome plating 3. Dimensions: 10 sticks 86x42x16 mm, 16 sticks 86x65x16 mm, 20 sticks 86x81x16 mm (there is an error in the manual measurement of the size) 4. Features: copper material is sturdy and durable, 16mm thickness design, thinner than cigarette case, convenient and practical; easy to open and close 5. Compared with traditional paper cigarette cases, copper cigarette cases are less likely to deform cigarettes, prevent moisture, and prevent crushing.