TPU Clear Smoke Silicone Skin Gel Cover Case For Nokia Astound C7 Get this latest Plexi Skin Cover Case to protect and cover your device. Plexi Cover is a flexible skin cover that looks like plastic with ahigh-gloss finish but made of hard silicone. Stronger and more durable than standard silicone skin covers. Provides the look of plastic covers without easily breaking. It is user-friendly and super easy to install and remove.