The Best Workout Underwear to Break a Sweat In

The best workout underwear feels like it’s barely there — which is why you'll want to stock up on these lighter-than-air thongs. Laser-cut edges eliminate bumps under leggings, and the fitted four-way stretch fabric won’t budge while you’re logging miles. Combined with anti-odor tech, you could work out in these for hours.

More: Our Favorite Watches for Tracking a Workout

These briefs hit the trifecta for workout underwear: The mesh-paneled (read: breathable) hammock-shaped pouch keeps everything from jostling; the stitching is reversed on the seams to prevent chafing and itching; the polyester and spandex blend is moisture-wicking to keep your junk from getting clammy.

No one wants to see panty lines showing through skintight leggings. These cheeky hipster briefs are seamlessly knitted to lay flush against your skin. Made from a nylon and spandex blend, they’re super lightweight with a wide waistband that will keep them from rolling down as you move through your workout.

In the words of one Amazon reviewer, "These protected my thighs like ... a Champion." The four-way stretch fabric is compressive enough to support your muscles without restricting motion, and targeted mesh ventilation zones (like under your groin) keep things nice and breezy. Wear these on their own or layer them under looser shorts or joggers.

Despite all the fancy fabrics out there, good ol’ cotton is actually a solid choice to sweat in. That’s because cotton is naturally breathable, which keeps bacteria from settling in and causing an icky stench. The classic bikini cut has a little stretch for comfort, and one reviewer (there are more than 7,961 on Amazon!) described wearing them as “bliss.” 

Keep your goods in place no matter how intense your workout gets with a snug fit (and ergonomic pouch) that's still sweat-wicking and breathable. With 7 inches of length, they won't even ride up when you're squatting or deadlifting. 

These bikini briefs were made to stand up to the toughest workouts: They’re made from breathable mesh fabric, which allows for airflow to keep you cool, and an antimicrobial treatment helps keep any stink at bay. 

You can wash them in the sink and they’ll be good as new as soon as they dry — which makes them perfect for multiday outdoor adventures.

What’s more uncomfortable than a wedgie while deadlifting? The thick waistband on this thong keeps it exactly where it’s supposed to be, while the mesh fabric allows for airflow as you work up a sweat. The fact that you won’t have to worry about panty lines is just a bonus.

Adidas' Climalite technology — whether it's in a T-shirt or boxers — was created to help regular your body temperature and prevent bacteria from growing in unmentionable places. 

Sweat moves from your body to the surface of the fabric where it evaporates, and you won't have to deal with any of the unpleasant effects of damp, clingy gear.