I have this one as well, though I wasn't so keen on the texture of the waxed canvas on the outside. It also felt as though my iPad would slip out of it (and could) if I held it at the wrong angle.
So I bought a sleeve from Rickshaw Bagworks which feels much better, I could customize it to look exactly how I wanted, and my iPad fits in it very snugly. This sleeve is very well-padded too, so it could probably withstand a bump or two. It's also made in San Francisco, like the Dodocase, so there's that, too.
http://www.rickshawbags.com/customize/custom-bag/fabric_selection/ipad-air
They say allow 14-16 days from order to delivery, but both items I have ordered from them arrived in 3-5 days.