I have the envelope for 3 months in use. After just one week, the thin plastic bridges were broken over the volume switch. About a month later, the inner plastic shell is torn at the recesses. The cracks grew larger over time and it broke first parts out of the cup. Meanwhile, the shell is broken so far that the phone has no more maintenance in the envelope. The outer leather casing still looks top of the pockets on the inside are very practical. I find it very unfortunate that was saved on the inner shell so. Addendum: I was unsolicited by the seller and charge a spare envelope sent, I will test them and report the result. So a great service I have ever experienced, it 4 stars. Thank you!