Women's Athletic Swimwear

find a swimsuit built for you

Halter or high-neck, bikini or boyshort – you pick the styles and we’ll find your perfect match.

Mix & Match Swim Finder

FEATURED SWIMSUITS
Sort By
Product 0: Rapid Bikini Top - Kima
Rapid Bikini Top - Kima
Deep Navy
$58
This bikini changes even faster than the rapids, the tide or middle school relationships. When the water or the action is fast-moving, we pull on the Rapid. One quick pull and our band and straps are customized to fit us just right. Unique double-cross racerback styling ties in the back. Pullover. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(12), XL(14).
Product 1: Tidal Reversible Bikini Bottom - Kima
Tidal Reversible Bikini Bottom - Kima
Deep Navy/iris
$56
When the water or the action is fast-moving, we pull on the Tidal. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 2: Goldie Tankini Top - Kima
Goldie Tankini Top - Kima
Deep Navy
$78
The Goldie locked-and-loaded tankini. A minimalist suit with sufficient coverage where it counts, makin’ it a top choice for hard-charging mamas who leave triangles in the geometry books. Strappy ‘racerback’ styling. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 3: Holy Grail Swimsuit Bottom - Solid
Holy Grail Swimsuit Bottom - Solid
$49
Aptly named, this low rise bikini bottom is a surprisingly flattering fit on just about everybooty: the Holy Grail indeed. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. Ruched side panels. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 4: Batu Bikini Top - Lily Paisley
Batu Bikini Top - Lily Paisley
Lily Paisley
$48
When we’re headed out for a tropical vacation, we take as little as possible, so we bring the Batu. Each piece has a fit so dialed in that it almost feels like it is a part of us. Slide t-back-style tops move with you and not off you. Fully lined. By Carve Designs. XS(2), S(4-6), M(8-10), L(12), XL(14).
Product 5: Tidal Reversible Bikini Bottom - Paisley Stripe
Tidal Reversible Bikini Bottom - Paisley Stripe
Paisley/stripe
$56
When the water or the action is fast-moving, we pull on the Tidal. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 6: Batu Tankini Top - Lily Paisley
Batu Tankini Top - Lily Paisley
Lily Paisley
$58
When we’re headed out for a tropical vacation, we take as little as possible, so we bring the Batu. Each piece has a fit so dialed in that it almost feels like it is a part of us. Slide t-back-style tops move with you and not off you. Hits at top of bikini bottom. Built-in shelf bra. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 7: Sunbuster 2.0 Full Zip Hoodie Sun Shirt
Sunbuster 2.0 Full Zip Hoodie Sun Shirt
White
Adriatic Blue
Aqua Green
Calypso Coral
$75
Better than sunscreen. Kills UV rays while waiting for the next big set or perfect for post-session. Our new sun shirt fabric is densely knit to keep us cool and deliver UPF 50, still dries faster than traditional sunshirts, and is infused with StinkStopper™ to boot. All that means we can truly comfortably play all day, no matter what the conditiions. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 8: Tidal Rave Underwire Bikini Top - Tivoli
Tidal Rave Underwire Bikini Top - Tivoli
Black Floral
$75
Sleek lines, zero drag, and (shhh) a stealthy, secret punch of underwire power. Boasts both a strappy aesthetic and support for up to a D cup. Rave-worthy and wave-worthy, indeed. Unique racerback style requires just a quick pull-and-tie to adjust the straps and band for a custom fit. Ruched front detail. Pullover. By Title Nine. 32C-38D.

For best fit, we recommend ordering bra sized swimwear in the same size as an everyday bra.
Product 9: Holy Grail Bikini Bottom - Tivoli
Holy Grail Bikini Bottom - Tivoli
Black Floral
$49
Our Holy Grail low rise bikini bottom delivers a surprisingly flattering fit on just about everybooty. The Holy Grail indeed. Ruched side panels. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 10: Tidal Rave Underwire Tankini Top - Tivoli
Tidal Rave Underwire Tankini Top - Tivoli
Black Floral
$85
Sleek lines, zero drag, and (shhh) a stealthy, secret punch of underwire power. Boasts both a strappy aesthetic and support for up to a D cup. Rave-worthy and wave-worthy, indeed. Unique racerback style requires just a quick pull-and-tie to adjust the straps and band for a custom fit. Ruched front detail. By Title Nine. 32C-38D.

For best fit, we recommend ordering bra sized swimwear in the same size as an everyday bra.
Product 11: Sunbuster 2.0 Long Sleeve Sun Shirt
Sunbuster 2.0 Long Sleeve Sun Shirt
White
Adriatic Blue
Aqua Green
$65
Better than sunscreen. Kills UV rays while waiting for the next big set or perfect for post-session. Our new sun shirt fabric is densely knit to keep us cool and deliver UPF 50, still dries faster than traditional sunshirts, and is infused with StinkStopper™ to boot. All that means we can truly comfortably play all day, no matter what the conditiions. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 12: Pele Bikini Top - Solid
Pele Bikini Top - Solid
$69
Built for fiery goddesses, the Pele is a creator of shape and support, destroyer of the notion that strappy styles aren’t for full cups. Full coverage underwire cups with removable modesty. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. Racerback-like support. Adjustability at neck. Fully lined. By Title Nine. 32C-38DD.

For best fit, we recommend ordering bra sized swimwear in the same size as an everyday bra.
Product 13: Paddle Board Swim Shorts
Paddle Board Swim Shorts
$59
When bikini bottoms are too little and board shorts are too much, these paddle board swim shorts are just right. Run-short-inspired styling with a built-in brief. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. By Title Nine. XS(2), S(4-6), M(8-10), L(12), XL(14).
Product 14: Lehua Bikini Bottom - Solid
Lehua Bikini Bottom - Solid
$52
When we’re ready to cause some trouble but can’t be bothered by fussy bottoms, these stay put through every antic. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16)
Product 15: Keep Your Cool Sun Shirt - Multi Stripe
Keep Your Cool Sun Shirt - Multi Stripe
Multi Stripe
$62
Sun trying to bully you back indoors? Give UV rays the cold shoulder. Lightweight, cooling rash guard fabric shields us from overdosing on Vitamin D; rated at UPF 50, this versatile top lets us run, bike, hike and kayak carefree all summer long. By Carve Designs. XS(2), S(4-6), M(8-10), L(12), XL(14).
Product 16: Sure Bet Midkini Top - Lago Niassa
Sure Bet Midkini Top - Lago Niassa
Black Multi
$59
Tired of playing swimsuit roulette? For the gambling kind of gal who wants better odds, put your money on a suit that will fit and flatter a real woman's body. Put your money on the Sure Bet. Classic triangle bikini appeal in a longline style that covers but never smothers. Fully lined. Pullover; x-back styling. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 17: Francie High Waisted Bikini Bottom - Lago Niassa
Francie High Waisted Bikini Bottom - Lago Niassa
Black Multi
$59
High waisted, shred-ready coverage for Gidgets who go hard. Built for breakthroughs, busting boundaries and owning our wipeouts with grace. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 18: Sure Bet Tankini - Lago Niassa
Sure Bet Tankini - Lago Niassa
Black Multi
$69
Tired of playing swimsuit roulette? For the gambling kind of gal who wants better odds, put your money on a suit that will fit and flatter a real woman’s body. Put your money on the Sure Bet. Classic triangle swim top appeal that covers but never smothers. Fully lined. X-back styling. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 19: Sunbuster 2.0 Short Sleeve Sun Shirt
Sunbuster 2.0 Short Sleeve Sun Shirt
White
Adriatic Blue
Aqua Green
$59
Better than sunscreen. Kills UV rays while waiting for the next big set or perfect for post-session. Our new sunshirt fabric is densely knit to keep us cool and deliver UPF 50, and still dries faster than traditional sunshirts. All that means we can truly comfortably play all day, no matter what the conditiions. 1/4 zip styling. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 20: Real Deal Bikini Top - Buttercup
Real Deal Bikini Top - Buttercup
Black Multi
$55
No pinching, ever–it’s the Real Deal. A real, no-nonsense, real coverage-and-support bikini top. One that’s ready wipeout after wipeout for seasons to come. Seamless construction puts the kibosh on suits that smush. X-back styling. Pullover. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 21: Francie High Waisted Bikini Bottom - Buttercup
Francie High Waisted Bikini Bottom - Buttercup
Black Multi
$59
High waisted, shred-ready coverage for Gidgets who go hard. Built for breakthroughs, busting boundaries and owning our wipeouts with grace. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 22: Real Deal One Piece Swimsuit - Buttercup
Real Deal One Piece Swimsuit - Buttercup
Black Multi
$99
No pinching, ever–it’s the Real Deal. A real, no-nonsense, real coverage-and-support one-piece top. One that’s ready wipeout after wipeout, lap after lap, for seasons to come. Seamless construction puts the kibosh on suits that smush. X-back styling. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 23: Demands Long Board Shorts
Demands Long Board Shorts
$60
We want coverage that moves with us, land and sea. We want fast-drying fabric that’s sturdy and easy to clean. We want a long board short style with a perfect fit—and the Demands Board Shorts meets all our demands. By Carve Designs. 2, 4, 6, 8, 10, 12, 14.
Product 24: Siren Bikini Top - Willow Mix
Siren Bikini Top - Willow Mix
Black Willow Dot
$59
The wisdom of decades of swim design all packed into one suit. When fresh sets are calling our name, we pull on the Siren. Stays put through wipeouts and duck dives alike. Pullover. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 25: Siren Tankini Top - Willow Mix
Siren Tankini Top - Willow Mix
Black Willow Dot
$69
The wisdom of decades of swim design all packed into one suit. When fresh sets are calling our name, we pull on the Siren. Stays put through wipeouts and duck dives alike. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 26: Lehua Bikini Bottom - Willow Mix
Lehua Bikini Bottom - Willow Mix
Black Willow Dot
$52
When we’re ready to cause some trouble but can’t be bothered by fussy bottoms, these stay put through every antic. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 27: Zenith Long Sleeve One Piece Swimsuit - Willow Mix
Zenith Long Sleeve One Piece Swimsuit - Willow Mix
Black Willow Dot
$129
The ultimate swim solution: bottoms and a rash guard that we’ll never lose, no matter how hard we wipe out. Secret built-in shelf bra keeps things one-and-done. Kitesurfing, SUPing, snorkeling and maximum UV protection all in one sporty suit. Ties at back of neck. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 28: Better 2.0 Tankini - Textured
Better 2.0 Tankini - Textured
Black
$69
Better because it adjusts for a custom fit. Better because it emerges unscathed from riding waves both tall and small or navigating grabby wee ones. And now, it’s better than ever. We took our original Better Tankini and revved it up with wider straps for greater coverage and comfort. Crafted from a unique textured fabric that forgives real and imagined figure flaws. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 29: Impossible Bikini Bottom - Textured
Impossible Bikini Bottom - Textured
Black
$52
A swim bottom that makes aquatic adventures possible. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 30: Better 2.0 Bikini - Textured
Better 2.0 Bikini - Textured
Black
$59
Better because it adjusts for a custom fit. Better because it emerges unscathed from riding waves both tall and small or navigating grabby wee ones. And now, it’s better than ever. We took our original Better Bikini and revved it up with wider straps for greater coverage and comfort. Crafted from a unique textured fabric that forgives real and imagined figure flaws. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 31: Surf Rock Board Shorts
Surf Rock Board Shorts
$54
Catch us surfin’ at Del Mar, Ventura County line, Santa Cruz and Trestle, Australia’s Narabine... When everybody’s goin’ surfing these are the classically baggy boardshorts we pull on to paddle out. 1960s style meets modern performance: when we’re done with our set, they dry out in a snap and are ready to hit the boardwalk. Relaxed fit. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 32: Selkie High Neck Bikini Top - Seychelles
Selkie High Neck Bikini Top - Seychelles
Purple Multi
$59
At home in the salty sea spray, but unafraid to take to dry land. Secure, high neckline and smooth, sleek seaming ensure our fluid movements aren’t interrupted by wardrobe-fix reflexes. Simply pull and tie to adjust straps and back. Racerback styling. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 33: Set It And Forget It Bikini
Set It And Forget It Bikini
$54
Our classic “set the support you want and forget about it” suit is back and better than ever. Cut-and-sew cups deliver coverage and support, and yes, they still work for A cups. Halter styling lets us decide how much support we need: tighten to find that perfect fit and say goodbye to all-day adjusting. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. Ties at back. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 34: Lehua Bikini Bottom - Seychelles
Lehua Bikini Bottom - Seychelles
Purple Multi
$52
When we’re ready to cause some trouble but can’t be bothered by fussy bottoms, these stay put through every antic. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 35: Selkie High Neck One Piece Swimsuit - Seychelles
Selkie High Neck One Piece Swimsuit - Seychelles
Purple Multi
$99
At home in the salty sea spray, but unafraid to take to dry land. Secure, high neckline and smooth, sleek seaming ensure our fluid movements aren’t interrupted by wardrobe-fix reflexes. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 36: Better 2.0 Bikini Top - Botanica
Better 2.0 Bikini Top - Botanica
Blueberry Floral
$59
Better because it adjusts for a custom fit. Better because it emerges unscathed from riding waves both tall and small or navigating grabby wee ones. And now, it’s even better. Calling this the “Best Bikini” doesn’t leave us room to continue the evolution of bikinis, so meet the Better 2.0 Bikini. We took our original Better Bikini and revved it up with wider straps for greater coverage and comfort. Pullover. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 37: Holy Grail 2.0 Bikini Bottom - Botanica
Holy Grail 2.0 Bikini Bottom - Botanica
Blueberry Floral
$49
Back and better than ever, our Holy Grail 2.0 is a surprisingly flattering fit on just about everybooty. The Holy Grail indeed. Svelte, streamlined rear coverage sister of the Holy Grail Bottoms. Ruched side panels. Fully lined. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 38: Better 2.0 Tankini - Botanica
Better 2.0 Tankini - Botanica
Blueberry Floral
$69
Better because it adjusts for a custom fit. Better because it emerges unscathed from riding waves both tall and small or navigating grabby wee ones. And now, it’s even better. Calling this the “Best Tankini” doesn’t leave us room to continue the evolution, so meet the Better 2.0 Tankini. We took our original Better Tankini and revved it up with wider straps for greater coverage and comfort. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 39: Paddle Board Swim Skirt - Solid
Paddle Board Swim Skirt - Solid
Black
Blueberry
Adriatic Blue
Tidal
$59
Whoever said swim security only comes in a board short cut never met our Paddle Board Skirt. The just-right length gives us the freedom of movement that we want. Built-in brief gives us the coverage we need. Made from fast-drying SurFlex™ and equipped with a secret stash pocket, it goes from deck to diving in, all summer long. Fixed, foldover-style waist with shirred sides hides a firm, stay-in-place waistband. Great for skort lovers ready to make a splash. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 40: Rapid Bikini Top - Wahine
Rapid Bikini Top - Wahine
Golden Tropical
$58
This bikini changes even faster than the rapids, the tide or middle school relationships. When the water or the action is fast-moving, we pull on the Rapid. One quick pull and our band and straps are customized to fit us just right. Unique double-cross racerback styling ties in the back. Pullover. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(12), XL(14).
Product 41: Tidal Reversible Bottom - Wahine
Tidal Reversible Bottom - Wahine
Golden/navy Print
$56
When the water or the action is fast-moving, we pull on the Tidal. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 42: Rapid One Piece Swimsuit - Wahine
Rapid One Piece Swimsuit - Wahine
Golden/navy Print
$90
This one-piece changes even faster than the rapids, the tide or middle school relationships. When the water or the action is fast-moving, we pull on the Rapid. One quick pull and our band and straps are customized to fit us just right. Unique double-cross racerback styling ties in the back. Fully lined. By Carve Designs. XS(2-4), S(6), M(8-10), L(10-12), XL(14).
Product 43: Endless Summer Long Sleeve Rash Guard
Endless Summer Long Sleeve Rash Guard
Navy/daisy
Black Wailuku
$56
Paddle-ready protection that stands up to the sun, keeping us comfortably covered in every venture. Adjustable, side ruching allows for custom length. Half-zip. By Carve Designs. S(4-6), M(8-10), L(12), XL(14).
Product 44: Pele Tankini Top - Solid
Pele Tankini Top - Solid
$79
Built for fiery goddesses, the Pele is a creator of shape and support, destroyer of the notion that strappy styles aren’t for full cups. Full coverage underwire cups with removable modesty. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. Racerback-like support. Adjustability at neck. By Title Nine. 32C-38DDD.

For best fit, we recommend ordering bra sized swimwear in the same size as an everyday bra.
Product 45: Wahine Swim Shorts
Wahine Swim Shorts
Black
Blueberry
Adriatic Blue
Loganberry
$62
Do not send a girl to do a woman's job and do NOT give us an itsy-bitsy bottom when we are grown women. We are wahines, and we rely on this short to keep us comfortable and confident. When bikini bottoms are too little and boardshorts too much, we don the Wahine. Run short-inspired with drawstring and built-in brief. Fast-drying, abrasion-resistant, woven outer. By Title Nine. XS(2), S(4-6), M(8-10), L(10-12), XL(14).
Product 46: Set It And Forget It Tankini
Set It And Forget It Tankini
$64
Our classic “set the support you want and forget about it” suit is back and better than ever. Updated cut-and-sew cups deliver improved coverage and support, and yes, they still work for A cups. Halter styling lets us decide how much support we need: tighten to find that perfect fit and say goodbye to all-day adjusting. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. Elasticized underbust. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).
Product 47: Boost Cropped Long Sleeve Rash Guard
Boost Cropped Long Sleeve Rash Guard
Black
$65
Brought to you by our T9 Movers & Makers Pitchfest winner, Sensi Graves. Yep, she slays and so does all the stay-put swim she puts her name to. Surf-labbed and tide-tested so it can stand up to Sensi, to us, to you. Rip ready, T9er approved. By Sensi Graves. S(4-6), M(8-10), L(12-14).

Sporty Swimsuits and Womens Athletic Swimwear

All our sunny adventures start with our perfect athletic swimsuits. Whether we're deep sea diving in a supportive bikini or playing hard on the beach in a sporty swimsuit, we expect our active swimwear to keep up with us. At Title Nine, we're redefining women's athletic swimsuits, one swim top and swimsuit bottom at a time. We're active women who need active swimwear, and we know how much the small details matter when it comes to our performance. So when we design our bikini tops and one piece swimsuits, we sweat the small stuff. Whether it's a halter-style tankini top with support for full cups or bikini bottoms with the right amount of coverage, we infuse performance into every stitch to meet all of our swimming needs.

Shop the arrivals of our new swimsuits and athletic swimwear and discover sport swimwear for every activity. Want to mix and match swimwear? Be our guest. Don't forget to check out our cover-ups and swim skirts, made with fast-drying poly fabrics and easy care performance blends. Perfect for throwing on post-surf session, these athletic swimsuits can seamlessly transition from beach to boardwalk and beyond. Need assistance finding the perfect fit? Chat with us on live chat or call the T9 gals at customer service, and we'll help you find women's athletic swimwear that defies expectations.

  • REFINE BY
  • Band Size

  • Cup Size

  • Size

  • Color

  • Category

  • Clear
    Rating
    • 5 Stars
    • 4+ Stars
    • 3+ Stars
    • 2+ Stars
    • 1+ Stars