Women's Swim Tops & Bottoms

Contact

Contact

Returns & Exchanges Shipping Information FAQS Contact Us Store Locations About Us

Contact Us

Rewards

Join Our Rewards Program

Earn rewards and exclusive member-only benefits for free.

Refer a Friend

Give $20, Get $20.

Become an Ambassador

Spread the love and get rewarded

Shop All
Bras

Shop All

Wireless Bras

T-Shirt Bras

Bralettes

Sport Bras

Maternity & Nursing Bras

Surgical Recovery Bras

Tanks & Bodysuits

Bra Accessories
Underwear

Shop All

Period

Bladder Leaks

Overnight

Sweat & Discharge

Non-Leakproof

Save on Underwear Kits

Teen

Mens
Shop By Category

Shop All

Bras

Underwear

Thigh Saver® Shorts

Swim

Apparel

Sleepwear

Active

Shapewear

Maternity & Postpartum

Accessories

Mens

Teen
Trending

New! Hotel Knix

SculptRib™ Collection

The Polka Dot Edit

The Wedding Shop

Shop by Life Stage

New Arrivals

Best Sellers

Gift Cards
New Arrivals

NEW: Shape & Smooth

15% off Founder's Pick

Back in Stock
Leakproof Underwear
Shop by Absorbency

Ultra

Absorbs 7-11 super tampons

Heavy

Absorbs 4-7 super tampons

Moderate

Absorbs 2-4 super tampons

Light

Absorbs 1-3 regular tampons

Essential

No absorbency

Need Help Choosing?

Take our Underwear quiz
Shop by Style

Shop All

High Rise

Bikini

French Cut

Thong

Boxers

Boyshort

Thigh Saver Shorts

Pads

Last Call
Shop by Solution

Dream Short Series™

Period

Bladder Leaks

Overnight

Sweat & Discharge

Non-Leakproof

Underwear Kits

Teen

Mens
New Mini Dream Boxer

Bundle & Save up to 20%

Why Knix Leakproof Works
Bras
Bras

Shop All

Wireless Bras

T-Shirt Bras

Sports Bras

Bralettes

Maternity & Nursing Bras

Surgical Recovery Bras

Tanks & Bodysuits

Bra Accessories

Find Your Bra Size
Solutions

Shop All

Lift

Smooth

Full Coverage

Bra Guide

Find Your Bra Size

Take our Bra quiz

Find the support, comfort and fit for you
Trending

NEW Shape & Smooth Bra

#1 Revolution Franchise
#1 Revolution Bra

NEW: Restore Sports Bra
Swim
Swim

Shop All

Swim One-Pieces

Swim Tops

Swim Bottoms

Swim Tops & Bottoms

Leakproof Swim

Coverups

Teen Period Swimwear

Last Call

Need Help Choosing?

Take our Swim quiz
One Pieces

Swim Quiz

The Swim Series
Teen
Teen

Shop All Teen

Teen Period Undies

Teen Period Sleep

Teen Period Swim

Teen Period Active

Teen Period Kits

Teen Pullover Bra

Last Call
Underwear By Absorbency

Ultra

Absorbs 7-11 super tampons

Heavy

Absorbs 4-7 super tampons

Moderate

Absorbs 2-4 super tampons

Light

Absorbs 1-3 regular tampons

Teen Period Sleep

New Light Cotton

New SuperPlus Leakproof®
Men
Mens

Shop All Mens

Underwear

Tees

Socks
Underwear by Absorbency

High Absorbency Pouch

Absorbs and blocks up to 66 ml of liquid.

Medium Absorbency Pouch

Absorbs and blocks up to 17 ml of liquid.

Extra-Light Absorbency Pouch

Wicks away drips & drops.

Cotton Modal Boxer Brief

Best Damn Tee
Offers
Sales & Offers

Bundle & Save up to 20% off Underwear

Buy a bra. Get Free Undies

Underwear Kits

15% off CloudCut™ Collection

Activewear: Up to 50% off

Last Call: Up to 60% off
Bundle & Save up to 20%

Buy a Bra. Get free undies.

Last Call: Up to 60% off

15% off Founder's Pick
Last Call

Join Club Knix

First Name *

Last Name *

Email Address * Checking…

Birthday (Optional)

Your Bag

Your cart is empty

But you're full of potential..

Loading recommendation...

Lingerie Wash Bag

Points

Color: White

Size:

Select Size

Fuzzy Slippers

Points

Color: Black

Size:

Select Size

Essential Full Mesh Thong

Points

Color: White with Black Polka Dot

Size:

Select Size

Leakproof UltraThin Boybrief

Points

Color: Warm Sand

Size:

Select Size

Super Leakproof® Dream Short™

Points

Color: Black

Size:

Select Size

Leakproof UltraThin No-Show Bikini 3-Pack

Points

Color: Eucalyptus/Rose Quartz/Rosewood

Size:

Select Size

Create an account to join Club Knix and earn points on this order

Order summary

Subtotal

$0.00 USD

Suggestions

Period Underwear
Cotton
Dream Short
Mini Dream Boxer
Need Help Choosing?

Top Picks

Ashley has 37.5“ hips and wears KNIX M | Front view of model wearing the Super Leakproof® Mini Dream Boxer highlighting the coverage and fit | Pink Stripe

Selling Fast

Super Leakproof® Mini Dream Boxer

$48.00 USD

Buy More, Save More

Color: Pink Stripe Limited Edition

+1 +3

Sarah has 38.5” hips and wears KNIX M | Front view of model wearing the Super Leakproof® Dream Short™ highlighting the coverage and smooth fit | Black

Best Seller

Super Leakproof® Dream Short™

$42.00 USD

Buy More, Save More

Color: Black

+2 +4

#1 Daytime Solution

Leakproof UltraThin No-Show Bikini

$27.00 USD

Buy a Bra, Get FREE Underwear: Use code FREELEAKPROOF*

Color: Mulberry Limited Edition

+2 +4

Restocked

Super Leakproof® Dream Boxer™

$48.00 USD

Buy More, Save More

Color: Mulberry/Pink Stripe Limited Edition

Home / Swim Tops & Bottoms

Swim Tops & Bottoms

Choose from all kinds of styles and cuts, from more cheeky to more coverage. And period swimwear options with built-in leak protection.

Sort by:

30 items

Sold Out

Limited-Edition Sculpt String Bikini Bottom

$52.00 USD

Color: Cypress Limited Edition

Sold Out

Limited-Edition Sculpt Triangle Bikini Top

$58.00 USD

Color: Cypress Limited Edition

Jay is a 30E wearing KNIX S+ | Front view of model wearing the Ruched Deep V Bikini Top, highlighting the neckline, strap design, and silhouette | Black/White

Last Call

Ruched Deep V Bikini Top - Last Call

$40.60 USD

$58.00

30% off

Color: Black/White Limited Edition

Molly is a 30B and wears a Knix size S | Front view of model wearing the Scoop Bikini Top, highlighting the neckline, strap design, and silhouette | Black/White

Last Call

Scoop Bikini Top - Last Call

$40.60 USD

$58.00

30% off

Color: Black/White Limited Edition

Last Call

Bikini Swim Bottom - Last Call

Color: Black

Leakproof Bikini Swim Bottom - Last Call

$38.50 USD

$55.00

30% off

Color: Black

Filters

Clear All

No filters available

30 items

Your swimwear questions, answered.

Can I return or exchange swimwear if it does not fit?

Yes, our entire Swim Collection is available for exchange or return. If you’re not happy with your fit, the suits can be returned within 30 days with the sanitary strip intact and tags attached.

What is the cup size range?

Most of our swimsuit styles come in options for A-G cups. Select styles accommodate from an A-DD. Please refer to the side guide on the product page for details.

Are the cups in all the suits removable?

Yes, some of our suits do have cups that can be removed. Please refer to the “How It Fits” section on the product page for details.

Should I fit the one-pieces for my chest or for my bum?

Fit to your cup size for the best support. If there is a dramatic difference between your underbust and hip measurement, we suggest trying the suit on with the sanitary strip intact and tags attached. That way it can be returned or exchanged for a better fit if needed.

Do your one-piece swimsuits work for long torsos?

The Leakproof Plunge One-Piece - Tall and the Leakproof Classic One Piece - Tall were specifically designed for those with longer torsos and are recommended for individuals between 5’9 and 6’1 in height.

Is the bum coverage similar to your underwear styles?

Depending on your preference, our suits feature different levels of coverage. Please refer to the “How It Fits” section on the product page for details.

Does the swimwear have UV protection?

Our swimsuits (excluding the Teen Period Swim Board Shorts) are made with premium UPF 50+ fabric.

How do I care for my swim?

Most of our swim pieces should be machine washed in cold water with mild detergent. Do not bleach and lay flat to dry. Please refer to the “Fabric and Care” section on the product page for details or the care tag.