Cabela's Supertec (left): For those that like the idea of basic mesh, these garments are made of 100-percent open-mesh nylon. But they are better engineered than previous systems and much better looking. Think old-school mesh on steroids. Breathability won't be an issue, and you'll keep cooler longer. They are loose enough that wearing a layer underneath should be no problem, and the mesh isn't so open as to allow a bunch of light to pass through.
Cabela's Made in the Shade (middle): All I can say is, wow. This stuff is awesome. Talk about light weight. It feels like it'll float away in a slight breeze. The fabric is a bit stiff, which results in some noise when rubbed together, but not enough to become an issue. Durability seems above par for such a warm-weather system. But the real kicker is the UPF rating; at 40+ this stuff will block 98 percent of harmful UV rays.
Cabela's Hunt Tech (right): Cabela's took a cue from competitive runners to design these garments. The lightweight polyester fabric feels like silk on your skin but will certainly breathe a lot better in the hot spring sun. It's also got an antimicrobial treatment to reduce odors.