Featuring a TPU main body, ergonomic shape, anodized CNC machined aircraft grade aluminum bezel and a genuine aerospace grade carbon fiber protective back plate, the Element Case Eclipse also includes an integrated kickstand for better video viewing along with our patent-pending SBS (Sound Boost System), which channels sound waves from the S4s rear speaker allowing them to exit at the front of the Eclipse case. The sound boost and quality enhancement make for better game play and video viewing without the use of head phones. It is Element Case style, ruggedness, and innovation for the serious Android user.