Go ahead, sweat it! The PRO boxer IONIC+ was designed to move :

Pro boxer briefs wick away more moisture than ever before
Added permanent anti-odor technology IONIC+ NO STINK. This technology eliminates bad odors before they start by preventing the growth of bacteria
No need to replace sex 100 times a day!
No friction between your penis and your legs. No more irritation on the thighs.
Composition

IONIC+ NO STINK Technology
Slim fit without opening (no fly)

6.5 inch inseam
MyPakage Pouch Technology
Soft 1 3/8 inch elastic band
85% Polyester / 7% IONIC+ Polyester / 8% Spandex