Less than the Air...2.7 pounds...see the specs below...
I believe you can customize them as well. Go to the Sony site.
According to the website it's only $2199.00 American. That is way less money and more bang for the buck than the Air. I think the Air is a bit of a rip off.
snip a long list of specs
As much as I hate feeding trolls....
The one you posted has a smaller screen, costs $400 more, has less RAM and runs Windows.
Now granted it does come with an optical drive and a fingerprint reader... oooh