Griffin, Dell XPS 10 Tablet Protective Case with Stand, Survivor All-Terrain, [Black] [Rugged] [Silicone and Polycarbonate] [Sealed Ports] [Built-in Display Shield] Independently tested and certified to meet conditions outlined in US Department of Defense MIL-STD-810G Integral Display shield deflects wind and rain (Test: up to 200 mm/hr for 1 hour) Rigid internal frame protects against shocks and drops (Test: drop on flat concrete surface from 6'/1.8 m) Sealed ports block blown sand and dust (up to 18 m/sec for 1 hour) Silicone cladding blocks vibration (18 hrs at 20 to 2000 Hz)