Cyclops cases feature shock-absorbing Thermo Plastic Elastomer (TPE) and polycarbonate, providing two layers of protection, and outstanding protection against impacts. The hardened polycarbonate exterior allows it to slide in and out of pockets with ease. This case Series protects device power-ports and audio-jacks with TPE plugs to keep out dirt and debris. These cases also include dust filters to protect speaker bays, and a built-in screen protector for the ultimate screen protection. The included lanyard loop allows you to accessorize your phone with key chains, charms or other accessories. Cyclops cases meet Military Standard MIL-STD-810F for Drop, Vibration, Dust, Sand and Rain (Independently Tested). Drop (Mil-STD-810F, Method 516.5) - 26 drops onto concrete from 4 feet Vibration (Mil-STD-810F, Method 514.5) from 20-2000Hz across 3 different axes for a total of 18 hours. Dust (Mil-STD-810F, Method 510.4) - blow dust for 3 hours at 29 ft / sec. Sand (Mil-STD-810F, Method 510.4) - blow sand for 3 hours at 59 ft / sec. Rain (Mil-STD-810F, Method 506.4) - 7.9 inches per hour of rain at 40 mph wind velocity for 1 hour.