I took a punt on one of these unofficial replacement backs as I found my glossy blue, whilst good looking, too much of a smear magnet. I ordered from a Chinese seller on ebay and after 10 days it arrived. What a pleasant surprise. It fits better than all 3 official backs I own. Absolutely no give in the corners and good clicky buttons. The matte finish is cool and tactile and avoids fingerprints like I avoid hard work!