4 Adjustable Vent HolesThe ultimate design for retainer storage For better ventilation and well protection, we specially design 4 alternative vent holes in the retainer holder, which means you can open it to aerate your retainer fully or close it to guard your retainer from dirt and dust. keep your orthodontic device always fresh and dry wherever you take. Sufficient Storage SpaceThis retainer case is big enough to hold 2 pieces of upper and lower retainers or aligners(3.43""x3.43""x1.06"").Not only that, it still have extra room for most of your clear aligner tools & orthodontic accessories.Plus, the mirror is also a great help when you need to put the retainer on or off outside. Protect on the goFeatures slim and lightweight, this aligner case is convenient to put in the pocket and carry to anywhere.The strong and powerful magnet ensures your case be closed during the transportation. You are now free to travel with your retainer and never worry about losing or damaging.Our aligner case will safely carry and protect your aligner throughout the whole treatment. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don""""""""t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it