Luminous Glow in the Dark Hard PC Back Cover Case w/ Green TPU Frame for iPhone 5 + Stylus Pen and Screen Protector Slim, light weight, and perfect fit for all Apple iPhone 5. Luminous bumper frame is made of a combination of high quality durable transparent green TPU material plus clear hard PC material. Uses rare earth luminescent materials for highest efficiency of light absorption and luminous effect. Crystal clear back shell cover made of hard and smooth PC material. Case must be under sun light or strong light exposure for at least 10-15 minutes for Luminous effect.