Personal Info

Delivery Methods

Returns

Contact Info

Gift Card

Women

New Arrivals

Linen Collection

Linen

Dresses

DRESSES

View All

ALL MENSWEAR

This refined swimsuit draws on archival references from '60s resortwear. Crafted from sculpting scuba, it's designed in a tank-style silhouette with monochrome contrast trims and bonded finishes.&nbsp;Machine wash

This refined swimsuit draws on archival references from '60s resortwear. Crafted from sculpting scuba, it's designed in a tank-style silhouette with monochrome contrast trims and bonded finishes.&nbsp;<ul><li>Machine wash</li></ul>

COLOUR-BLOCK SCUBA TANK SWIMSUIT

This refined swimsuit draws on archival references from '60s resortwear. Crafted from sculpting scuba, it's designed in a tank-style silhouette with monochrome contrast trims and bonded finishes.&nbsp;<ul><li>Machine wash</li></ul>

Product Type

Product Feature

Colour

Sizes

CONTRAST-TRIMMED SCOOP-NECK BIKINI TOP

CONTRAST-TRIMMED SWIMSUIT

COLOUR-BLOCK SCUBA BANDEAU SWIMSUIT

COLOUR-BLOCK SCUBA BIKINI TOP

CONTRAST-TRIMMED SWIM SKIRT

SARONG WRAP SKIRT

BONDED-SCUBA V-NECK BIKINI TOP

CLASSIC BIKINI BRIEFS

TWISTED TEXTURED CUTOUT SWIMSUIT

ASYMMETRIC DOUBLE-FACED SWIMSUIT

BONDED SWIMSUIT

CONTRAST-TRIMMED TRIANGLE BIKINI TOP

CONTRAST-TRIMMED TIE-SIDE BIKINI BRIEFS

BONDED-SCUBA HIGH-WAISTED BIKINI BRIEFS

TWISTED TEXTURED BANDEAU BIKINI TOP

TEXTURED HIGH-WAISTED BIKINI BRIEFS

BONDED-SCUBA V-NECK SWIMSUIT

CONTRAST-TRIMMED BIKINI BRIEFS

BANDEAU BIKINI TOP

BRAZILIAN BIKINI BRIEFS

Africa

Asia

Europe

Middle East

North & South America

Oceania

Country Selector Configs

Drawers

Global Config

Information Footer

Swimwear

Thank you for signing up to the COS newsletter. We’ve just sent you a confirmation email – please check your inbox and click the link to confirm your subscription.

Confirm your subscription

We were not able to confirm your subscription. Please click below and we will resend a confirmation email.

Something went wrong

You are already a subscriber

We will keep you up to date on new collections, events and promotions.

Thank you, you are now subscribed

I would like to receive personalized promotions from COS a brand of the H&amp;M Group. I confirm that I’m 16 years or older. I consent to let H&amp;M Group process my personal data to provide me with personalized email and text messages in accordance with the <a href="/en-eu/customer-service/privacy-notice" uuid="d35a6d87-cf86-4052-b79a-3c4d61265a7e" target="_self">privacy notice</a>.

Sign up for 10% off your first order

Thank you, we have updated your subscription preference accordingly. Please note that it may take a day or two for the system to update and you may receive newsletters during this time that were already on their way to you. If you have any concerns, please get in touch by phone on +61 1800 960 831 or email us.By unsubscribing, we will no longer send you updates about new products, personal recommendations and sales to the email linked to this newsletter.

YOUR SUBSCRIPTION IS UPDATED

CONFIRM YOUR SHIPPING LOCATION

It looks like you are based in {{currentCountry}} but are about to switch your shipping location to {{targetCountry}}. Would you like to continue?

Modals

Notifications

Products Config

Sitewide

Modern, tactile and elegant, find a range of bikinis and swimsuits online now. Explore our summer women’s swimwear collection.

Swimwear & Beachwear - COS

Sign up to receive 10% off your first order and stay up to date on new collections, events and exclusive offers.

Newslettersubscribe

THE COS NEWSLETTER

About Us

https://career.cos.com/content/coscareer/en_gb.html

https://press.cos.com/connexion?lang=eng

Store Locator

Sustainability

Features

https://www.facebook.com/cos/

https://www.instagram.com/cosstores/

https://uk.pinterest.com/cos/

https://www.tiktok.com/@cos

https://open.spotify.com/playlist/03xISbDqJQ1DYgqtR9cjmN

THE COMPANY

Payment

Product Care

Size Guide

Fit Guide

Student Discount

ASSISTANCE

Privacy Notice

Terms And Conditions

Member Terms And Conditions

Terms Of Service

Cookie Notice

Accessibility Statement

LEGAL

Shopping Bag

MEMBERS RECEIVE FREE SHIPPING WITH A MINIMUM SPEND OF {{currencySymbol}}100.

Standard Home Delivery

Standard Pick Up Location

Express Home Delivery

Standard Pick Up Locker

MEMBERS RECEIVE FREE SHIPPING WITH A MINIMUM SPEND OF {{currencySymbol}}100

Favourites

You are currently shopping on {{currentCountry}} website. When changing countries your shopping bag will be emptied and you will be signed out of your account. Are you sure you want to proceed?

You are currently shopping on {{currentCountry}} website. When changing countries your shopping bag will be emptied. Are you sure you want to proceed?

Thank you for being with us, if you experience any problem with your subscription contact our support.

I would like to receive personalised promotions from COS a brand of the H&M Group. I confirm that I’m 16 years or older. I consent to let H&M Group process my personal data to provide me with personalised email in accordance with the 

You are now subscribed and we will keep you up to date on new collections, events and promotions.

Microsoft.Targeting

Turns on / off additional Material Information in PDP drawer

When enabled, it monkey-patches the Adyen SDK's Drop-in component to intercept payment method selections and reads it back on the checkout success page to show the human-readable payment method name.

Enables automatic logout for authenticated users when changing countries to prevent cross-market session issues.

Azure Insights Telemetry for nextjs, both frontend and backend

Enables direct communication with the BFF for customer settings (get and update) instead of going through the legacy API proxy. Falls back to the legacy path when disabled.

Controls whether Canada (CA) market is included in hreflang meta tags for SEO.

Default: false (disabled)

Behavior:
Disabled (default): Canada is excluded from hreflang tags. Use this during the initial Canada launch phase when only a landing page is available and all other pages redirect.
Enabled: Canada is included in hreflang tags alongside other production markets. Enable this once Canada has full page coverage and no longer redirects users to a landing page.

Use case: Prevents search engines from indexing Canada-specific hreflang alternates until the market is fully launched with complete page support.

Turning this on will allow an Inactivity trigger (when user is returning) for an extra selection call to Centra

Enables the Ingrid delivery address locking functionality in checkout, which allows the delivery address section to be locked to prevent changes.

When enabled, the checkout payment flow will attempt to update an existing guest customer (PUT) if guest creation returns a 409 conflict, instead of failing. This enables an upsert pattern: create if new, update if already exists. 

Bypass checkout/login and take user directly to CIAM page

Used to to display debug info from components using <Debugger> - Prod here is irrelevant as it can only be featureflag toggled for lowe environents

coming soon feature flag is to enable/disable the feature.

FeatureFlag that is determines ReviewsDrawer Version

Feature Flag to enable/disable reviews functionality in My Account application area.

worked together with clientDegubOverlay to display data around how long since last interactivity

Flag that enables Digital Order Return feature
- Link Button on My Account Order History
- Order Return Block on different pages

Controls if PDP delivery and returns sidebar shows Ingrid delivery estimation time widget or content from Storyblok.

Blocks plaintext email addresses in newsletter URL parameters (unsubscribe, double opt-in). When enabled, URLs must use hashed emails with bpId. Phone numbers remain allowed in plaintext.

Blocks plaintext emails in Double Opt-In confirmation URLs. Requires hashed emails with bpId. Phone numbers remain allowed in plaintext. Enable only after Emarsys includes bpId in DOI emails.

Disable preorder on lower environments. Preorder cannot be disabled on PROD.

testflag to show debugger in action provided clientDebugOverlay flag also is avalilable. Will never work in Production (only limited to lower Environments)

Switches on/off ecomID SizeFinder and SizeAlert widgets functionality on PDP

[Deprecated] Flag that will enable the use of the new elevated components as part of the Elevation project.

Flag that will enable the use of the new elevated footer as part of the Elevation project.

Flag that will enable the use of the new elevated navigation as part of the Elevation project.

FF for elevated size select buttons/selector

Controls display of elevated quickshop drawer

Enables browser-based API mocking using MSW (Mock Service Worker) for local development, testing, and preview environments. When active, network requests are intercepted and served with mock data, improving frontend development speed and reliability. Disable in production.

Enabled PDP stock check call caching. Cache control headers will be set to 1 min.

Enables the new Wishlist API service as the storage backend. When this flag is true, the app persists and reads wishlists via the backend service.  When false, it uses the client-side cookie storage.

Switches My Account orders/returns data source from Centra GraphQL to ESCI API Gateway. Both paths produce the same unified types. 

When enabled it doubles PDP revalidation and caching time (will be set to 20 mins)

When enabled it doubles PLP revalidation and caching time (will be set to 20 mins)

This feature flag can be used to toggle support for faceted navigation on PLPs.

feature flag that is deciding which version of find in store drawer 

Allow COS App to use FHR AB Test caching instead of directly passing sessionID.

Controls whether Klarna payment options are displayed as separate, selectable payment categories or as a single consolidated payment method.

As we deprecate Headless UI , radiobuttons are first up to switch to Radix. Turn off on this feature flag if we want to fallback to Headless UI as fallback

Purpose: Enables historical price display for products to meet regulatory compliance requirements. 
What it does: When enabled, shows the previous price alongside the current price for applicable products, allowing customers to see price changes over time. 
Why it exists: Satisfies consumer protection regulations requiring transparent pricing history, helping customers make informed purchasing decisions and compare price trends.

When enabled, uses the ParcelLab test country code (xt) instead of the actual user country code for the Digital Returns widget.

https://hmgroup.atlassian.net/browse/PBCDE-12822

https://hmgroup.atlassian.net/browse/PBCDE-9156

used to support showing more swatches than just 1 at a time

Purpose: Enables unit pricing display for multipack products to meet regulatory compliance requirements.
What it does: When enabled, displays the calculated price per individual item for multipack products (e.g., "£5 / piece" for a £10 two-pack).
Why it exists: Satisfies consumer protection regulations requiring transparent unit pricing to help customers compare products sold in different quantities.

Our new Product Details Drawer using tabs 

Will trigger extra attention around size-guide, a red-text-button that animates, and notification messages in Wishlist and in the opend size-guide drawers

Validates checkout state integrity during payment processing by comparing server-calculated hash with client-provided hash, preventing payment when checkout data has changed between user confirmation and payment API call to ensure accurate orders.

If enabled, the Storyblok Cache service endpoint will be used to proxy Storyblok requests. Note: Not all envs have the endpoint configured so may not affect them.

Enables tracking the origin of newsletter subscriptions by attaching touchpoint metadata to Customer API, identity provider, and Tealium payloads.

Tealium: include guest_bpid in purchase event for guest checkout

Flag to enable test countries.
As of today (2024-07-19) these are:
BE, CY, GR, HR, LU, PT

Flag to enable test markets. 
As of today (2024-07-12) these are: 
CH, ES, FR, GB, IE, IT, NO, PL, SE

This flag is for new turbo cookie compliance

Use Upper Case (instead of lower / sentence case) in the product Card Titles

Swimwear

Colour-block scuba tank swimsuit

Colour-block scuba tank swimsuit

Contrast-trimmed scoop-neck bikini top

Contrast-trimmed swimsuit

Colour-block scuba bandeau swimsuit

Colour-block scuba bikini top

Contrast-trimmed swimsuit

Contrast-trimmed swim skirt

Sarong wrap skirt

Sarong wrap skirt

Bonded-scuba v-neck bikini top

Classic bikini briefs

Twisted textured cutout swimsuit

Asymmetric double-faced swimsuit

Bonded swimsuit

Contrast-trimmed triangle bikini top

Contrast-trimmed tie-side bikini briefs

Bonded-scuba v-neck bikini top

Bonded-scuba high-waisted bikini briefs

Twisted textured bandeau bikini top

Textured high-waisted bikini briefs

Contrast-trimmed triangle bikini top

Contrast-trimmed tie-side bikini briefs

Bonded-scuba v-neck swimsuit

Twisted textured cutout swimsuit

Contrast-trimmed triangle bikini top

Contrast-trimmed tie-side bikini briefs

Contrast-trimmed bikini briefs

Bonded-scuba v-neck swimsuit

Contrast-trimmed bikini briefs

Contrast-trimmed scoop-neck bikini top

Bandeau bikini top

Brazilian bikini briefs

Bonded swimsuit