I have the envelope now 4 months in use and unfortunately had to realize after only 2 months that my shell (white) at the corners is discolored red. I carry my phone just in my pocket and sometimes pocket, both of which have no red fabrics. Usually it is at home with me on the cabinet. I can not explain why the edges are colored red to me. The price of the cover is good, but if I now have to buy ne new shell due to discoloration 3-4x a year, then I have saved nothing more. Schade