12 Best Period Swimwear Options of 2024 for Stress-Free Beach Days

If you need swimwear with support up top and down low, try this full-coverage swimsuit from Knix. Reviewers <3 that it has a built-in shelf bra with adjustable straps and removable cups, as well as built-in period protection of up to three teaspoons. Even better, it comes in extended sizes to fit a wide range of busts (and those larger cup sizes come with thicker straps for added support—genius!).

• Material: 85% nylon, 15% spandex
• Size range: XXS-4X
• Colors: Oceana, Black, or Feline
• Absorbency: 3 tampons

THE REVIEW: As one review reads, “I normally wear a size 14/16 and 36J bra. I’m 5’7″ with a long torso, defined waist and wide hips. I purchased the XL+ in black, and it fits like a dream. I love the cut of this suit—not too high on the leg, but not too low, either. If you’re looking for a comfortable and functional bathing that still looks chic, classic, and sorta hot, this is the one.”

Everyone needs a little black swimsuit, no? This one from Hamburg-based feminine hygiene brand MYLILY is sporty and chic, with slightly cheeky butt coverage, unique double shoulder straps (which are adjustable in the back), and the ability to absorb up to two tampon’s worth of liquid.

• Material: 82% nylon, 18% spandex
• Size range: XS-2X
• Color: Black
• Absorbency: 2 tampons

THE REVIEW: “The swimsuit fits very well and the quality of the fabric is great!” notes one reviewer. “The difference to a ‘normal’ swimsuit is hardly noticeable, and I was able to go swimming without any worries.”

Whether you’re feeling a lil bloated or just appreciate a bit more coverage, these high-waisted bottoms from Modibodi are *it*. Thanks to the thick waistband and full butt coverage, you’ll feel 100 supported at the pool and on the beach (especially since these boast a fast-drying absorbent lining). Get ’em in black, blue, or this fun tropic print.

• Material: 82% recycled nylon, 18% spandex
• Size range: S-3X
• Colors: Black, Ultramarine Blue, or Midnight Tropic
• Absorbency: 2 tampons

THE REVIEW: “Perfect!!” one tester writes. “This swim bottom puts me at ease while I’m in the pool. The material is very comfortable and absorbent. Would definitely recommend.”

A heavy flow and a wide-set vagina (IYKYK 😅) is no match for these full-coverage, high-waisted bottoms. These breathable bbs make sure nothing gets out—and for less than $40, the price can’t be beat. Plus, they’re neutral enough to wear with just about any bikini top.

• Material: 75% nylon, 25% spandex
• Size range: XS-3X
• Colors: Black, Verdigris Green, or Fuchsia Pink
• Absorbency: 3 tampons

THE REVIEW: “I have a very heavy flow, and these swim bottoms did exactly as advertised,” one review reads. “I was in and out of the pool for literally 7+ hours a day everyday of my period, and not once did these disappoint me. They’re also true to size and very flattering on. I love the high-waisted option, and they made me feel compressed when I was extra bloated!”

This trendy swimsuit from Ruby Love is so discreet, no one even has to know you’re on your period. And since it holds up to three tampons worth, no one will ever find out. Plus, shout out to that darling ruffle detailing and trendy one-shoulder silhouette!

• Material: 82% recycled nylon, 18% spandex
• Size range: XXS-3X
• Colors: Classic Ruby, Black Sea, Cabana Dreams, Blue Waters, or Sage
• Absorbency: 3 tampons

THE REVIEW: “My teen daughter and I love Ruby Love,” one reviewer writes. “The one-shoulder swimsuit and bikini are so cute and comfortable. My daughter feels confident and doesn’t have to worry about swimming or surfing when she has her period. Fabulous company and product!!!!”

10/10 would wear this even on days when I don’t have my period. Featuring a chic bikini-style wrap top design, this one gives you the support of a one-piece with the look of a two-piece, and testers love how you can adjust to get a customized fit. It also has slightly more than medium coverage on the thigh and bum and can hold up to three tampon’s worth of liquid.

• Material: 85% nylon, 15% spandex
• Size range: XS-4X
• Color: Black
• Absorbency: 3 tampons

THE REVIEW: “First of all, this swimsuit allows me to enjoy the beach or the pool without worry,” one review reads. “Secondly, the fit is chef’s kiss perfection. I feel super sexy while wearing it and having my period. The fabric is luxurious and sturdy. This is not a flimsy bathing suit. You will feel secure in just about every way possible.”

Who says ya can’t rock an itsy-bitsy-teenie-weenie bikini when you have your period?? These cheeky-cut Brazilian bottoms (which are also available in pink, black, and lavender) can hold up to two teaspoons of liquid, and they strike the perfect balance of style and security.

• Material: 82% recycled nylon, 18% spandex
• Size range: XS-2X
• Colors: Ultramarine Blue, Black, Glow Pink, or Lavender
• Absorbency: 2 tampons

THE REVIEW: According to one review, “I don’t like wearing tampons, so I used to not be able to go swimming on my period. These work perfectly and are so cute!! Now I can go swimming whenever I want and look cute while doing it.”

Adjustable spaghetti straps? Check. Thick, stretchy fabric? Check. Four layers of leakproof protection that fully extend from front to back? Check. This no-nonsense suit has it all, and it comes in at just over $40, too. Don’t be surprised if you’re tempted to get it in all five colors.

• Material: 85% nylon, 15% spandex
• Size range: XXS-XL
• Colors: Purple, Black, Red, Blue Curacao, or Cayenne
• Absorbency: 3 tampons

THE REVIEW: According to one reviewer, “I love the how thick it is—fabric is high-end quality. It looks slimming [and] flattering on. I like that it’s leakproof. I was hesitant at first to wear it in pool without wearing feminine products, but it actually worked! No leaks, no issues. Straps are adjustable. It has tummy control. Fits as expected. I highly recommend.”

Just because your bottoms are absorbent doesn’t mean you want it to look like you’re wearing a diaper. These classic brief bottoms (which have earned over 500 five-star reviews on Amazon, nbd) are stylish yet supportive, with high-cut legs, moderate butt coverage, and a mid- to low-rise design. And according to testers, the absorption power is A+.

• Material: 88% nylon, 12% spandex
• Size range: 4XS-3X
• Colors: Verdigris Green, Black, or Fuchsia Pink
• Absorbency: 3 tampons

THE REVIEW: As one tester writes, “As my luck would have it, I got my period on the first day on a cruise to the Bahamas. Thankfully, I thought ahead and bought this swimsuit before my trip. It pretty much saved my trip. I used it for two trips to the beach, and it did not leak even during my heaviest day!”

Complete with a high-cut leg, cheekier butt coverage, and a sculpting waistband, these high-waisted bottoms from Knix will have ya feeling cute and covered while still showing some skin (and they look even cuter when paired with the matching Deep V Bikini Top, just saying).

• Material: 85% nylon, 15% spandex
• Size range: XXS-4X
• Colors: Lush Green, Black, Feline, Oceana, or Hibiscus Heat
• Absorbency: 3 tampons

THE REVIEW: “Definitely would size up if you are in between sizes, as these will snatch your waist and hips,” one tester notes. “They are super secure and comfy. I will buy all the colors I can because they are so darn comfy and fit nice over my curves. 10/10 recommend!”

A period swimsuit you can wear on your heaviest flow day? Yep, it exists!! This sporty suit from Ruby Love is thick and functional with a racerback design, dri-tech mesh to prevent leaks, and an organic cotton liner. And while it can hold three tampons worth of liquid, you have the option to add on a double-sided pad for double the absorption power.

• Material: 80% nylon, 20% spandex
• Size range: XXS-3X
• Colors: Aztec, Bae Watch, Miami Vice, Out of This World, or Black Sea
• Absorbency: 3 tampons

THE REVIEW: “This one-piece swimsuit is great if you are on a dive team or swim team and don’t want to miss practice,” notes one buyer. “The fabric is thick like a team suit, comfortable, flattering and holds up great to chlorine.”

Found: the Goldilocks of leakproof bikini bottoms. Not too high but not too low, these beauts sit right below your belly button and boast a thick waistband that’ll hug you in all the right places. They also offer slightly cheeky coverage in the back, as well as light to moderate leak absorption.

• Material: 85% nylon, 15% spandex
• Size range: XXS-2X
• Colors: Black Leaf, Black, Dark Blue, Barrier Reef, Bittersweet, Orange Red, or Dark Green
• Absorbency: 3 tampons

THE REVIEW: “They fit perfectly,” notes one tester. “They are higher cut and cheeky, but I prefer that. They’re high waist, but not comically high—some high-waist bathing suits look like a costume for a 50s pin-up photoshoot—but these are more subtle. They fit my waist without cutting in or giving me love handles. The period feature works as it should. I will probably buy a few more pairs.”

Tryna catch waves without any leaks? Here are a few things to keep in mind as you shop for a leakproof bikini or one-piece:

Consider the absorbency

Depending on how heavy your flow is or where you are in your menstrual cycle, you’ll need to plan accordingly. You know your period and body better than anyone, so you can look at the specifications and decide how strong you want your leakproof swimwear to be. And if you need extra coverage or are nervous to try it out off the bat, start off by using an extra liner.

Pick your coverage

Do you prefer high-rise or low-rise bottoms? One-pieces or two-pieces? Once you know what style of swimsuit you’re looking for, odds are you’ll eliminate enough possibilities to find the leakproof suit of your dreams.

Read the reviews

Listen, I know how tough it is to buy swimsuits online without getting to try ’em on in person (and tbh, shopping for bathing suits IRL is hard enough!!!). Luckily, most of these suits come with hundreds of reviews to help you decide whether it’ll be a good fit for you and your body.

Cosmo‘s team of digital fashion experts have decades of combined experience in the industry. They spot relevant trends on the runway before they even hit your TikTok FYP or Insta Explore Page and conduct research across retailers of all kinds—testing many brands IRL—to bring you the best clothing and accessory picks for every season. Basically, we’ve curated the internet to bring you the chicest options like it’s our job (because it is, heh).

Each of our shopping articles adheres to the 15 Percent Pledge and includes products for all sizes. Our period swimwear was chosen based on style, functionality, testability, price point, and so many reviews to put together this shoppable list of the very best for you!