The material can protect machine from being scratched or bumped . Fine silicon rubber material , soft texture, fine touch-feeling excellent scrubbing-proof, fine adhesive ability. can abate the impulsive force when bumped, not easy to be damaged, can be rinsed. Applied to protect mobilephone ,mp3 mp4 or psp... exquisite design, put your machine in our case completely. Material glowing in the dark and heat sensitivity available.