I just wanted to add a couple things...
1. WeatherTech stopped listing the rear window deflectors for 2009-2010 Vibes many years ago after many complaints of them falling off, but the rear ones for
2009-2013 Matrices fit just fine! We've had them on both our Vibes for about seven years now and absolutely love them!
2. I highly recommend removing the crappy double sided tape that comes on the rear deflectors and replacing it with 3M Super Strong Moulding Tape. I did this after the rear ones fell off within a day or two of sitting outside in the sun while I was at work. Since I put the 3M tape on, they do not budge. I did have to remove them once when I had my windows re-tinted, but they came right off with no damage to the deflectors or the Vibe and were re-installed with no issues either.