I've been using...
http://www.tozandoshop.com/Tozando_B.../005-200ag.htm
They are single-weave and fairly lightweight. The jacket folds up into a pretty compact package.
I also have the Tozando "seersucker" gi...but, I don't like those since they easily get saturated with sweat and stop their wicking action. But, they do fold into a very small package.