Protect and personalize your LG Optimus F3 MS659 phone with this High Quality Protector Case. Crystal flexi skin is a new style cover, made of a smooth-feeling TPU (Thermoplastic Polyurethane) . TPU is a mixture of plastic and silicone all in one, semi-hard and semi-soft case. It is very flexible, yet significantly durable at the same time. Protecting your phone to the fullest. Unlike silicone, crystal skin retain it's shape and repels dust. Crystal skin looks and fits like a hard case but yet its flexible with soft grip. Lightweight soft case that is tear resistant. Molded to twist and bend but not stretch out of shape. Protects your phone from scratches, bumps, and dings. Smart design, gives you total access to all functionality and button without removing and very easy to install.