Very disappointing 169

I bought this case for my iPhone 5 because I was very happy with the bumper from my iPhone 4 the same brand (Tech21).
Unfortunately I see that after only two months on the two corners which attach the flap are split. It is not to misuse but a fragile design because the phone never fell, was always carried in my coat pocket and I never fully repliais flap but held it with fingers not to twist it.

I will not go that choice to replace her.