The envelope I have now been almost 7 weeks usage and is still rigid and taut. Of course, a silicone shell bears on thick and leaves the iPhone 4 no longer appear slim, as a Hard Case, for the protection of the iPhone 4 in falling is simply larger. The shell is also very good in the hand, the surface feels pleasant and not too smooth. The edges are cut slightly sharp, but that's a matter of taste, whether it bothers you or not. The ordered me design in "transparent" deserves its name right: the silicone plastic is really crystal clear, on the back are circles that are centered around the Apple logo, imprinted and on the back is at the bottom a little " Amazon Basics "logo. The optical and haptic design has succeeded in my opinion, very - always subject to the proviso that a silicone case certainly is not a "designer piece", but to satisfy more practical requirements. And the latter applies to full, the included screen film was not only most simple and bubble-free muster, but can also be seen when using hard and feel and prevents screen damage.
Total may not be the cheapest, but (and I've tried several cases) one of the best accessory products to protect the iPhone 4. But like a rating of 5 stars.