Comfy Workout Underwear: Jennifer Garner's Favorite Activewear Brand

If you're a leggings-lover like many of us, you know how difficult it can be to find comfortable, fuss-free underwear that doesn't leave lines or bunch up during a sweat session. These days, leggings are a fashion staple beyond the gym, so finding high-quality underwear is essential. Whether you're hitting the yoga studio or braving a boot camp, you want underwear that stays put.

If you're a fan of Alo Yoga's celeb-favorite activewear, you might not know that the brand also sells underwear designed specifically for workouts. Check out these four options from Alo Yoga's hidden underwear section that make the perfect addition to your gym bag.

The Airbrush Invisible Cheeky underwear uses the same soft, lightweight fabric as Alo Yoga's popular Airlift Leggings. It's even odor-resistant, so you can sweat without worrying about unwanted smells. Reviewers praise the "super soft" fabric and undetectable silhouette, even under leggings. One fitness instructor calls them her "go-to undies."

The Airbrush Invisible Thong and Invisible String Thong are made from the same lightweight, odor-resistant fabric and come in sizes 00 to 18 and nine colors. Reviewers rave that they're "great to work out in" and feel like you're "not even wearing any undies." The Invisible String Thong features even less fabric on the backend for a barely-there feel.

If you want to try something a little different than the airbrush fabric, the Airmesh Venus Thong has a breathable micro-mesh made of nylon and spandex blend for optimal stretch. Its ultra-thin waistband won't roll or bunch up, providing a comfortable option for any workout.

Check out Alo Yoga's range of barely-there underwear styles to add to your workout wardrobe.