Very thick shell, as well protects the shock but not compatible with the special adapter shells of magnetic charging dock for Sony DK31 Z1 (Even Mumbi problem the shells for Z1, by against the charging cable Sony USB without magnetic dock passes right with all). More smoke Muvit minigel this is the ugliest of all those I tried on the Z1 (which is one of the finest such the time, so it is a shame). Pleur prefer the black hull Krusell, also sold on this site, a little more expensive but aesthetically perfect, stiffer and more thin, so potentially a little less protective, but that just goes with the DK31 adapter, and warrants surcharge. I will ask the seller to trade me received 2 against 2 x Krusell by paying the difference to him.