Tested to exceed U. S. Mil-spec drop tests, Dux plus Duo withstands the rigors of the classroom, work, and everyday use. Designed with educatorsâ and it professionalsâ input, The case features our patented magnetic closure, A super protective polycarbonate and rubberised bracket, transparent back for asset tagging or user customization, and integrated storage that can accommodate either the Apple Pencil or Logitech crayon. In addition, this rugged case also boasts a durable and water resistant polyurethane cover to ward off occasional drips or spills, as well as an instant on/off cover (wakes up/turns off the device) to save and maximize battery life.