My girlfriend got me this bag about a month ago. It fits my 13 inch Macbook just perfectly. The front pockets have enough room for the dongles I usually carry around, i.e. HDMI and VGA adapter, ethernet cable, power cord and other small accessories.
Notice that the bag is designed exclusively for your laptop, it'll be really uncomfortable to try to fit extra stuff. It has a nice design, which looks professional and modern. I actually carry my computer around very little, and the bag isn't meant for heavy duty use. It has little padding and it won't cushion your device if it free falls.
Overall though, considering my needs I'd recommend this bag to any Macbook user.