This TPU case, also known as Thermoplastic Polyurethane, is a flexible skin cover made of hard rubber silicone with a high-gloss finish. The Nokia Lumia 900 TPU case offers all around protection to prevent scratches and chips. Its design is also precisely cut with opening for charger ports, speaker, and etc. to ensure full usability. The Nokia Lumia 900 TPU case is capable of retaining their shapes and repelling dust.