Use high quality TPU material, one time moulding, good flexibility Inner and outside surface square use frosting arts design,square periphery transparent, shows the whole body artistic, generous and fashion Inside edge design, perfect match, keep earphone, data and charger port, don't effect any key-press operation Surface anti-dust, anti-stick fingerprint, strong weather resistance, not stick hand, proper hardness or softness, comfortable feeling Anti-shock that can slow down attack to protect your lovely phone