I use iKlear and it comes with a terry cloth; (I spray iKlear on the terry cloth and never directly on my MBA) I wipe my MBA down to clean it; then use the soft cloth to polish it. Works every time...
Just go out and ask for a "microfiber" cloth!
P.S.: They're expensive!
Thanks, but that's not what I asked. And that terry cloth that comes with iKlear is waaay too rough.
It doesn't require a special cloth but if you want to pay for one "especially" made for the purpose -> these are quite nice:
http://www.radtech.us/Products/NotebookScreenSavrz.aspx
... and no, there is nothing unique about the MBA screen - it's glossy and a fingerprint magnet - that's all.
Again, not what I asked. A microfiber cloth is not really what I'm looking for, too rough.