My son discovered boxer briefs and that's all he wants to wear now. The difference between boxer briefs and regular boxers is in the fit. He likes they way fit snugly so that there is no bunching up to deal with. But even though they fit snugly, he says they never bind or feel tight. You don't even notice them if you're not thinking about it.
In the summertime, though, he likes the new mesh boxer briefs by Jockey. They are very breathable and claim that they wick moisture away.
Jockey brand is pretty expensive, really, but the quality is definitely there. They hold up to washing after washing and they hold their shape and don't fade at all.
My son likes the black ones, so that is what I buy for him.
The package says this about the mesh fabric: "The mesh fabric construction offers breathability and moisture management for maximum comfort."
They are designed so that the legs don't ride up and the waistband is made of micro fiber for comfort