Three layers of protection: Layer 1: Clear Polycarbonate sheet with high performance hard coating that offers chemical and abrasion protection. Layer 2: High-impact polycarbonate skeleton. Layer 3: Premium grade silicone skin to provide added protection against drop, bump and shock. Form-fitting case designed to perfectly fit your device Easy access to all buttons, sensors, and ports Full access to user interface, camera lens, headphone jack, speakerphone and microphone Allows charging without removing the case Compatible with ipod touch 4 Models