4 Pairs of Breathable Underwear for Working Out

Key Takeaways

• Breathable workout underwear pairs moisture-wicking fabric and a cotton gusset with stretch, flat edges, and a stay-put fit.
• Reach for organic cotton on yoga and recovery days, and save quick-drying microfiber or stretch knits for sweaty, high-intensity sessions.
• Match the cut to your workout: hipsters for running and lifting, bikinis for spin and HIIT, briefs for yoga, and thongs for thin leggings.
• A good pair fits close without rolling, digging in, or riding up, so give every new pair a squat test.

Your leggings, sports bra, and sneakers get plenty of thought before a workout, but what about the breathable workout underwear underneath? You know the feeling: you're crushing a set, then the dampness kicks in. Sweaty sessions come with the territory, but you don't have to give up comfort to get through them.

The right pair keeps you fresh, stays put through every squat, and won't show lines under your leggings. Below, you'll learn what makes underwear breathable, how cotton compares with synthetic fabrics, and which Thirdlove styles we recommend. You'll also get a cut-by-workout guide and fit tips to help you avoid wedgies and chafing.

What Makes Underwear Breathable Enough for Working Out?

Underwear is breathable enough for working out when its fabric, gusset, and cut all help you stay cool and dry while you move. If one of those falls short, you'll feel it by the second set. Here's what to check before you buy.

• Moisture-wicking fabric: Sweat-wicking underwear pulls moisture off your skin and dries quickly, so you won't feel swampy halfway through spin class.
• A cotton gusset: Cotton is naturally soft and breathable where it counts most. Every pair of Thirdlove underwear has a cotton gusset.
• Stretch: Fabric with give moves with you through lunges and burpees without pulling or bunching.
• Flat, seamless edges: Bulky seams and tight elastic can rub on runs and leave visible panty lines (VPL) under leggings.
• A stay-put fit: Underwear that holds its place won't ride up into a wedgie mid-squat.

In general, cotton underwear is a smart, comfortable pick for your workouts, especially if you have sensitive skin.

Is Cotton or Synthetic Underwear Better for Sweaty Workouts?

It depends on how hard you sweat: organic cotton is the softest pick for lighter sessions, while synthetics dry faster when you're dripping. That's why it helps to keep both in your drawer and choose by workout. Here's how the three most common workout fabrics compare.

If you sweat heavily, save microfiber or a stretch knit for high-intensity days and reach for cotton on yoga and recovery days. Thirdlove makes both: the 24/7® Classic Hipster uses lightweight microfiber, and our Organic Cloud Cotton styles use soft organic cotton.

What Is the Best Breathable Workout Underwear for Women?

The best breathable workout underwear for women pairs a light, moisture-wicking fabric with a cut that suits how you move. Now that you know what to look for, let's outfit you. These four Thirdlove styles are our favorite moisture-wicking underwear for staying fresh through your next workout.

24/7® Classic Hipster

Our 24/7® Classic Hipster blends comfort and style for your active lifestyle. It's made from our signature lightweight microfiber, the same fabric as our 24/7® Bra collection, so it's unbelievably soft and breathable.

• Moves with you: The fabric flexes through every squat, lunge, and burpee.
• Full back coverage: The hipster cut covers you in back, making it an excellent choice for all types of workouts.
• 100% cotton gusset: It keeps everything fresh where it matters most.

Organic Cloud Cotton Brief

If you prefer a more classic silhouette, the Organic Cloud Cotton Brief is your best friend. It's crafted with ultra-soft organic cotton that's designed to be gentle on your skin.

• Naturally breathable: The fabric wicks away moisture, so you feel fresh during your workouts.
• Snug, comfortable fit: It fits close without feeling restrictive, which makes it perfect for low-impact exercise where comfort is key.
• Higher-waisted cut: You get extra coverage and a smooth, flattering look.

ComfortStretch Bikini

The ComfortStretch Bikini strikes the balance between coverage and freedom of movement. Its four-way stretch fabric moves to fit your body, so nothing restricts you during your fitness activities.

• Lightweight and moisture-wicking: It helps you stay cool, whether you're hitting the treadmill or tackling a spin class.
• Seamless construction: With no seams to rub, it's built to keep chafing out of your workout.
• No visible panty lines: Its sleek design lays flat against your body with no elastic or bulky stitches.

Organic Cloud Cotton Thong

If you like a minimal approach, our Organic Cloud Cotton Thong is one of the lightest, most breathable workout thongs you can wear. It uses the same luxurious organic cotton as the brief in a minimalist silhouette.

• Moisture-wicking cotton: The soft organic fabric wicks away moisture, keeping you dry and comfortable throughout your workout.
• Invisible under leggings: It disappears beneath even the most unforgiving leggings, so it's a go-to if you want the best underwear for leggings.
• Stays in place: Despite the minimal design, it's incredibly comfortable and doesn't shift while you move.
• Gentle on skin: It works well, even for sensitive skin.

Which Underwear Style Is Best for Your Type of Workout?

The best underwear style for your workout is the one that matches how much you move, bend, and sweat in that session. Use this guide to pair each class with a cut.

A couple of habits make any cut work harder for you.

• Pack a spare pair: Change into fresh underwear after class so you're not sitting in sweaty fabric.
• Check your leggings: Thinner, lighter leggings show more, so pick a seamless bikini or thong on those days.

How Should Workout Underwear Fit?

Workout underwear should fit close to your body and stay put without digging in, bunching, or riding up. A good fit is the difference between a pair you forget about and one you're tugging at between sets. Check these spots when you try a new pair.

• Waistband: It should sit flat without rolling down or cutting into your waist when you bend.
• Leg openings: Edges that dig in or leave red marks usually mean the size is too small, while gaps mean it's too big.
• Gusset: It should sit flush against your body, with no sagging or pulling.
• Squat test: Squat, lunge, and lift each knee in front of a mirror. If anything shifts, try a different size or cut.

Ready to Build Your Workout Underwear Drawer?

Yes, and it's simple: start with one breathable pair for each type of workout you do most. Grab the 24/7® Classic Hipster for runs and lifting, plus the Organic Cloud Cotton Brief for yoga. Add the ComfortStretch Bikini for spin and HIIT and the Organic Cloud Cotton Thong for leggings days.

Whether you're a hipster, brief, bikini, or thong kind of gal, the best workout underwear for women keeps you dry and focused. With breathable workout underwear in your drawer, you can crush your goals feeling confident and relaxed.

Not sure which size to grab? Take the Fit Quiz or chat with a fit stylist, and you'll be ready for your next sweat session.