CaseGuru Military Extreme-Duty Rugged Case For iPad Mini / With Retina - Built-in Screen Protector (Kids Friendly) Independently tested to meet conditions outlined in US Department of Defense MIL-STD-811 Sealed ports block blown sand and dust (Test: up to 18 m/sec for 1 hour) Rigid internal frame protects against shocks and drops (Test: drop on flat concrete surface from 6'/1.8 m)