Sweat absorbing underwear is designed to do exactly what it sounds like: pull moisture away from your skin so you can stay dry, comfortable, and confident, no matter what’s on your calendar. Made with breathable, moisture-managing fabrics, sweat proof underwear helps wetness evaporate more quickly, leaving you feeling cool and giving you the freedom to move through your day without distraction. Whether it’s a long workday, an intense workout, or a hot summer night, absorbent underwear helps eliminate your concerns about visible sweat marks.
A Versatile Essential
Life isn’t always neat and tidy, so your underwear shouldn’t expect it to be. Sweat wicking underwear for women is made for all the moments that call for extra absorbency: heavy flows, long workouts, hot nights, and everything in between. It’s also a thoughtful choice for postpartum recovery, when your body is healing from pregnancy and may experience increased sensitivity, bleeding, or incontinence. Having super soft, dependable support during this time can offer comfort when it’s needed most.
Additionally, no per- and polyfluoroalkyl substances (PFAS) are used in manufacturing our leakproof underwear. According to the U.S. Environmental Protection Agency, current scientific research suggests that PFAS exposure may lead to negative health effects. Instead, we thoughtfully design our women's sweat wicking underwear with sustainable fabrics designed to feel good on the skin without bulky layers or stiff materials. Because you deserve the very best when it comes to what you put on your most sensitive parts.
Two Styles Worth Adding To Your Drawer
If you’re looking for the best sweat wicking underwear, Saalt has your back(side). For days when you’re managing heavy flow, bladder leaks, or summertime sweat, our best-selling Leakproof Cotton Brief is your go-to for no pad, no problem confidence.
Meanwhile, if you’re looking for a solid postpartum option, we highly recommend the Leakproof Seamless High Waist. This cloud-soft, high-coverage boyshort packs extra absorbency power with extended gusset coverage. It’s a favorite for heavy periods, postpartum care, or managing leaks while you sleep.
The absorbency level in both styles can hold up to 2 pads or 3 regular tampons’ worth of fluid, so you can worry less and live more. Just like with regular underwear, it’s still important to change into a fresh pair regularly. According to the CDC’s Menstrual Hygiene guidelines, trapped moisture can lead to irritation or infection, so keeping backup pairs in your drawer is always a good idea.
Comfort That Doesn’t Quit
When you’re dealing with heat, hormones, or just life in general, sweat wicking underwear is a small way to feel more grounded in your body. And because all Saalt Wear is made with sustainable materials and designed for reusability, it’s a kind choice for the planet, too. Every pair is a gentle, thoughtfully designed solution for the real-life moments no one prepares you for, but you’ll be glad you’re ready.
How Saalt’s Leakproof Technology Works
If you’re used to thinking “thicker means safer,” you’re not alone. But Saalt’s leakproof gusset flips that myth on its head. Instead of piling on bulk, we spent over three years developing a patented gusset that’s thinner, more flexible, and designed to work smarter, not harder. Think of it as your secret shield, hustling to whisk away dampness before it becomes a problem.
Four Innovative Layers, One Powerful Design
At the heart of every pair of Saalt underwear is a four-layer gusset system:
- Moisture-Wicking Top Layer: This top layer pulls liquid away from your skin and directs it downward, helping you feel dry and fresh.
- Super Absorbent Core: Specially designed to hold up to 3x its weight in liquid, this second layer locks moisture in so it doesn’t resurface while you wear it.
- Moisture-Locking Barrier: A breathable yet fluid-resistant third layer keeps leaks at bay, moving with your body without trapping heat or discomfort.
- Soft, Flexible Outer Fabric: The finishing touch? A carefully selected body fabric that holds everything in place for a barely-there feel.
If you’re a visual learner who has to see it to believe it, this video shows it all in action!
Designed For Real Life
From overnight protection and heavy flow days to postpartum recovery and bladder leaks, Saalt’s sweat wicking underwear offers versatile support you can count on. Whether you’re staying active, resting up, or tossing and turning during a humid night, this design keeps up.
Different collections also offer different fabrics. Our Seamless Collection is made with ultra-soft and stretchy LYCRA XTRA LIFE for cozy, lounge-all-day wear. Prefer something a little more elevated and sexy? The Lace & Mesh Collection blends light support with silky style using post-consumer recycled materials.
Tailored Protection For Every Body
Absorbency levels matter, so choose the one that fits your needs best. Whether you're using Saalt undies as a backup to a menstrual cup or disc or going all-in on pad-free flow, take the time to test your pair at home first. Every flow is unique, and our Saalt Coaches are always here to help you find your fit at [email protected].
Saalt’s Impact: How Sustainable Period Care Creates Change
For many of us, period care is a given. But for millions of people around the world, it's a barrier to education, work, and daily life. Around 500 million women and girls globally lack access to basic period care, forcing many to miss school or work. In fact, 86% of girls in Kenya and 46% of girls in Nepal report missing school because of their periods. Even in the U.S., 1 in 5 struggle to afford period care each month.
At Saalt, we believe a safe, dignified period should be the baseline, not a privilege. That’s why our mission is rooted in equity and access. We donate 1% of our revenue to support menstrual health education and provide long-term, sustainable period solutions where they’re needed most.
Measurable Progress
Every time someone chooses Saalt, they're part of a much bigger ripple effect. Here's what our community has made possible so far:
- 148,372 Saalt products donated
- 616,316 periods supported with sustainable care
- 1,321,200 days of school funded
- 244,170 pounds of cleanup efforts funded
This isn’t just about supporting eco-conscious living. It’s about removing obstacles and opening up opportunities for people around the globe.
Sustainable Design That Protects The Planet
Reusable period care can benefit your body and the Earth. Every person who switches from disposables to Saalt helps reduce the estimated 20 billion period products tossed annually in U.S. landfills alone. Over a lifetime, one person with a period may use up to 11,000 disposable products. Choosing reusable care means reducing that number significantly. Thanks to our community, Saalt has diverted over 30 million single-use products from landfills and repurposed over 4.4 million water bottles into breathable, sustainable underwear fabrics.
Saalt is proud to be a certified B Corporation, which is a designation for companies that meet high standards of social and environmental performance, transparency, and accountability. This reflects our commitment to measurable impact and long-term change. Every choice matters, and we’re grateful to have you here to achieve these goals together.
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