This product shields the radiation of this cellular phone / smartphone from the phone. The shell is made of natural felt outside and inside on the side when you call to ear holds a shielding material ("novonic") equipped. Through small holes in the sound is transmitted, so that makes the mobile phone / smartphone while calling in the casing / can be. If my purchase even a measurement report the Universität der Bundeswehr München was settled that underpins this fact.
In particular, I have to protect the down fall of my mobile phone (incl. Envelope) already "allowed" to test several times. Stone floor, tiles, stairs, etc. - no trace - everything is still as good as new! Thank God! : O)
Perhaps more important, that the present here "natural white" version - a little "dirty" or natural looks from the pictures. Nevertheless, I find you very beautiful!
Overall, I must say that the bag comes in a lovely classical style, is well made and perfect for my Nokia N9, my two BlackBerrys (Bold) and is well suited for various Samsung phones. I highly recommend this great protective case friend very happy!