ZTE Obsidian Case, RANZ Turquoise/ White Spot Diamond Studded Bling Crystal Rhinestone Dual Layer Hybrid Cover Silicone Rubber Skin Hard Case For ZTE Obsidian (Z820) Compatible with ZTE Obsidian (Z820) ONLY Two layers combine into one; made with a High Quality shatter-proof hard plastic shell with rhinestone diamond bling and a soft flexible TPU skin for the maximum protection you can give your phone. Accessible opening provides quick access to button functions. Easy installation, just attach the first layer then the second layer