Lifeproof is a company that makes highly durable iPod cases that are designed to be water, dirt, snow, and shock proof. The cases feature a polycarbonate frame, scratch-resistant waterproof screen protector, shock absorbing elastometer, shock absorbing rear Polypropylene cover, and shock absorbing perimeter O-ring. They are built to MIL-STD-810F-516.5, meaning they have been dropped on all surfaces and edges onto concrete from a height of 2 meters without any decrease in performance from the device. Additionally, Lifeproof-clad devices are rated for immersion up to 2 meters of water and are low profile, with a main body depth of 10.8mm, only 1.3mm thicker that the phone itself. The case currently available is only compatible with iPhone 4 and 4S, although, according to the show rep, an iPad case will be available roughly six months out.