Let’s face it: the underwear you’re wearing right now wasn’t built for an active lifestyle and high-performance workouts. That is, of course, unless you’re wearing Mack Weldon’s new AIRKNITx underwear. Built from the ground up by Mack Weldon to blend the classic underwear look and feel with material and construction that can stand up to a workout, AIRKNITx underwear transitions easily to every aspect of your day. How’s that possible? Lightweight fabric with 4-way stretch that moves with you and is insanely breathable. Mesh cool zone construction. No roll waistband and stay put legs. Anti-odor coating for all day freshness. AIRKNITx underwear is built so well that Mack Weldon battle-tested it with Equinox trainers. Whether you’re a really active guy or just hitting the gym occasionally, this is the underwear you should be wearing.