Summer may be the favorite season of sun-loving, poolside loungers. But for those with a larger bust line (or just those particularly prone to sweating), the warm weather also brings with it a host of problems, namely sweaty boobs. Luckily, the best bras that help prevent underboob sweat are made from breathable, moisture-wicking fabrics, and designed to lift and support your breasts to avoid a damp bra line.
How To Shop For Bras That Prevent Underboob Sweat
When shopping for bras that prevent underboob sweat, seek lightweight styles made from breathable, sweat-wicking fabrics, like cotton and certain nylon or polyester blends. Bamboo is another amazing breathable option, as it’s soft, lightweight, and actually stays 3 degrees cooler than cotton. Some bras have additional features that encourage airflow, like ventilated mesh or cooling linings. When in doubt, opt for styles that specifically mention their moisture-wicking or cooling properties in the names or product descriptions.
Another way to prevent underboob sweat is to ensure that your breasts are lifted up and away from your skin, which will not only allow for better airflow, but can also prevent painful chafing. Underwire can occasionally feel heavy and uncomfortable in hot, sticky weather, so in lieu of an underwire, look for other supportive features like adjustable straps, molded cups, removable pads, or adjustable hook-and-eye closures. Longline styles also offer a nice, sweat-wicking barrier between your boobs and your skin.
When that baby powder under your bra line fails you, the best bras that help prevent underboob sweat will act as your backup. Scroll on to start shopping.
1. This Seamless Pullover Bra Made Of Cooling Bamboo
This bralette’s breezy, lightweight bamboo viscose material means your skin will have an easier time keeping cool instead of feeling cramped and sweaty. Nylon and spandex offer generous stretch so it molds perfectly to your shape, while strategic knit-in ribbing and wide, stay-in-place straps offers targeted lift and support, without an underwire. Since it’s totally free of hardware, you won’t need to deal with any clasps and hooks digging into your skin.
According to a fan: “This little bralette is absolutely my favorite item of clothing I own (I have 4). It is so light but it holds the girls comfortably in place. Best part is no more sweaty bettys! I put this on as soon as I get home and wear it all night. If you have night sweats this will help. No boob sweat! [...] Have recommended to all my friends. Perfect for yoga or low impact anything. Not for running or serious workouts for me at least. Do yourself a favor and get one...or 4.”
Sizes: X-Small — X-Large | Colors: 8 | Material: 80% Bamboo Viscose, 13% Nylon, 7% Spandex
2. A Lightweight & Seamless Longline Bralette
This smooth, seamless bralette is made from moisture-wicking nylon and stretchy elastane, and it’s lightly lined and has a wide band for a bit more coverage. The pull-on bra also has removable pads and a stylish V-neck in the front and back. Best of all, this bra comes in lots of colors, including beige, jet gray, and classic black.
According to a fan: “This feels like a silky, second skin. I love that the cups are removable (I only remove for washing, always wear them in) [...] Of course there is no underwire, but this is the first ‘comfy bra’ that I can actually wear to work, no uniboob. And I find it perfectly cool in the heat. I will be ordering more!”
Sizes: X-Small — 2X | Colors: 28 | Material: 77% Nylon, 23% Elastane
3. This Super-Soft Wireless Bra Made Of A Moisture-Wicking Fabric
Made from a special cooling, moisture-wicking polyester fabric with a hint of spandex for four-way stretch, this popular Hanes bra feels like a dream on hot days or nights. It’s unlined and underwire-free, but a hook-and-eye closure and wide, stay-in-place band offer a hint of lift. The seamless, tag-free design feels like nothing against your skin. Grab a pack of two so you always have a fresh one on hand.
According to a fan: “Very comfortable and lightweight. I am a nurse and constantly sweaty and moving. This bra is light and gives great support, yet moves with you without pinching or constraining. I bought another one after one day of wearing. Highly recommend.”
Sizes: Small — 3X-Large Plus | Colors: 6 | Material: 90% Polyester, 10% Spandex
4. Another Sweat-Wicking Bra With More Adjustable Features
Designed with comfort in mind, this wire-free bra is made from moisture-wicking polyester and spandex to give you a flexible fit with four-way stretch. The brand’s SmoothTec band stays in place all day, while the foam cups provide subtle shaping. In the back, there are several rows of hook-and-eye closures and adjustable straps that can be converted into a racerback, ensuring you can find the right amount of lift.
According to a fan: “I love this bra! It is comfortable, especially without the underwire and there is even extra fabric at the bottom of the bra to absorb boob sweat. I bought two more in black and white.”
Sizes: Small — 3X-Large | Colors: 7 | Material: 90% Polyester, 10% Spandex
5. This Seamless Bra With Airy Mesh Along The Band
Another great option from Hanes, this cooling bra is not only made from a lightweight, seamless material designed to feel like a second skin, but it also features mesh insets in the center front and back of the band to allow for more airflow exactly where you need it. Meanwhile, the adjustable (and convertible) straps, hook-and-eye closure, and lightly lined foam cups create shape and lift.
According to a fan: “I was looking for something comfortable, that had some support, but without wires. Not wanting to spend a ton of money on something I expect to wear just around the house when working from home, I went with Hanes. Now I am in LOVE! This bra is breathable so even in the 90+ degree weather and humidity of Florida, I am not sweating at the banding of the bra. It [...] provides support. Best of all it is comfortable. It fits as expected and I will definitely be buying a few more of these!”
Sizes: Small — 3X-Large | Colors: 5 | Material: 84% Nylon, 16% Spandex
6. A Bra With Cooling & Lifting Mesh-Lined Cups
If you want a little bit of lift from your bra (but you'd prefer to avoid heat-absorbent padding), check out this cooling bra. The adjustable criss-cross straps help you get a little lift (and they’re adjustable in the front for added convenience), while the cooling mesh-lined cups still wick away any excess moisture.
According to a fan: “Plenty of support and nice natural shape. It’s, dare I say, extremely comfortable! The moisture wicking cup fabric seems to be doing its job and my breasts don’t feel like they’re drowning in sweat.”
Sizes: 34A — 40C | Colors: 4 | Material: 80% Nylon, 20% Elastane
7. A Supportive Sports Bra That Keeps You Cool During Sweaty, High-Impact Workouts
Featuring a wide band, molded cups, and a front-zip closure, this high-impact sports bra will provide support and help keep you dry. The moisture-wicking fabric offers four-way stretch, while the mesh racerback design creates breathability. Plus, the hook-and-eye closure allows you to find the most comfortable fit.
According to a fan: “Real comfy. Easy to take off. When the sisters are sweating and need fresh air just unzip the front zipper without taking the whole bra off. I own two pairs and will probably buy more.”
Sizes: Small — 5X-Large Plus | Colors: 4 | Material: 80% Polyester, 20% Spandex
8. Editor’s Pick: The Classic Racerback Bralette From Calvin Klein
If you're a fan of scoop necklines but aren't interested in a cooling cup, then this sporty cotton bralette with a bolder elastic band could be your next wardrobe staple for those sweatier days. This cult-favorite bralette is unlined, lightweight, and provides just a hint of compression, without feeling constricting. As one reviewer noted, “The first thing I noticed when opening this bra was how SOFT it is! And then when you put it on it’s completely comfortable and breathable.”
Editor praise: “I have a bunch of these Calvin Klein bralettes and they're really lightweight and soft, perfect for sweaty days. They're made mostly from cotton so they breathe really well, and they also have a bit of spandex so they don't lose shape even if you wear them all day. I highly recommend these!” — Bustle editor Amy Biggart
Sizes: X-Small — 4X | Colors: 28 | Material: 53% Cotton, 35% Modal, 12% Elastane
9. A Double-Lined, Sweat-Wicking Sports Bra That Keeps Larger Busts Secure
If you have a larger bust and are looking for a sports bra for sweaty, high-impact workouts, turn to this sports bra from Glamorise — the double-lined camisole design keeps your boobs secure, but the breathable mesh lining prevents them from getting overly sweaty. The non-stretch cups keeps your breasts firmly in place to reduce painful bounce, and adjustable straps and increasing rows of hook-and-eye closures according to bra size ensures you can find your perfect fit.
According to a fan: “This is the best bra I have ever worn. It fits comfortably, and it supports very well without sacrificing shape. There is very little to no roll up on the band. I have a very large chest, and this bra allows me to run pain free as well as absorbs the dreaded boob sweat. I wish I had found this bra years ago.”
Sizes: 34C — 50J | Colors: 10 | Material: 70% Polyester, 25% Polyamide, 5% Elastane
10. This Lightweight, Wireless T-Shirt Bra With Countoured Cups
This Playtex bra features rounded foam cups, wide straps, and high sides to give you coverage and support in a lightweight, wire-free design. The nylon-spandex T-shirt bra has adjustable straps and a hook-and-eye closure for a customized fit, and you can choose from a range of versatile colors like beige, black, and navy.
According to a fan: “I thought I would give this bra a chance and boy was I glad I did!! I literally felt like I wasn’t even wearing it, very comfortable, cool and fit perfectly! [...] I am definitely buying six more!”
Sizes: 36B — 44DD | Colors: 5 | Material: 100% Nylon
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