Bullet Points : 1 > Built-In Tile Technology Makes It Easy To Find Your Aligners. If Your Case Is Far Away, Use The Tile App To View Its Last Known Location On A Map. In The App, You Can Press Notify When Found And Enlist Help Anonymously From The Tile Network 2 >You Can Also Double Press The Tile Logo On Your Case To Make Your Phone Ring, Even When Itã¢ÂS On Silent 3 >Streamlined Design Fits In Your Pocket. Convenient, Hidden Mirror To Spot-Check Your Smile 4 >Soft-Touch Lining Holds Everything In Place. Vent Holes Keep Things Nice And Dry Description : Smiledirectclub Trackable Retainer/Aligner Case Powered By Tile - Item Locator And Finder For Retainers And Aligners1 Count (Pack Of 1)