I've owned the Xperia Z2 for a year and a half now, this is my 3rd case (Spigen TPU, RoxFit Carbon Fiber stand/case and finally the genuine Sony style cover).
I've read mixed reviews on this, people complaining on build quality or the fact you can't use the dock whilst the case is on, but I think this is made very well, looks subtle but you've got to love showing off the Sony logo. I love how the sides arent covered with plastic too. The device fits like a glove too, I recommend cleaning your device with a microfibre cloth before putting into the case otherwise you'll get dirt and whatnot in there. Honestly for £5 you really can't go wrong here, I may just consider buying the white version of the case too.