Silicone Prism Case - Crystal Protection. The Prism Case silicone cover is made from a modern type of rubberized silicone, thermoplastic elastomer. This silicone is safe for human health and does not have a harmful impact on the environment. Constantly keeping the phone in the case does not cause it to overheat, unlike cheaper silicone types. The Silicone Prism Case is a transparent, resilient, and sufficiently flexible cover. Over time, it does not stretch or become cloudy. Its back panel features a crystal structure within the interior volume. The case itself is not glossy, but the crystal facets create a sparkle, color shimmer, and shine effect in the sunlight. The dimensions of the Prism Case precisely follow the contours of the phone and its functional slots. Small bezels around the camera, speakers, flash, and touch screen effectively protect the phone from drops and impacts. The volume buttons and sleep button are covered, providing full protection from water and dust. Ports are open and easily accessible. The Silicone Prism Case