1. High-strength stainless steel mandrel, smooth opening and closing, not easy to break, and durable. 2. Magnetic sensorless opening and closing, easy and convenient for one-handed operation. 3. DOTCUTY slim aligner case with a frosted surface, delicate and discreet. 4. Dimensions: 3.66 inches * 1 inch 5. Package contents: 1 orthodontic retainer case 6. The DOTCUTY aligner case is very suitable for storing invisible aligners. It can also be used as a storage case for other dental devices (such as mouthguard cases, retainer cases, night aligner cases, orthodontic appliance cases, and invisible aligner cases). It is ultra-light and portable, and can be carried around. 7. The simple design makes it odorless, non-slip, and breathable. The DOTCUTY aligner case has high transparency, good luster, and excellent toughness and impact resistance. The frame is thicker, able to resist pressure and impact. 8. It is light in weight and small in size, making it easy to carry when going out or traveling. 9. The retainer case is suitable for storing orthodontic appliances, retainers, dentures, or other small items. It comes with a stainless steel mandrel and a magnetic buckle, a frosted surface, a portable retainer case with a unique design style, beautiful appearance, and a variety of colors.