The protective cover is made of a soft synthetic material which is and "excited" over the edge. Unfortunately, it is then at the edge slightly above so that the Apple Smart Cover rests no longer completely flat on the glass. For this reason, I have again umgetauscht.und me more bought the back cover for a few euros a different back cover, in which the Smart Cover again rests flat on the glass, and that makes me a much higher value on other impression.