Name: CLASSIC BIKINI BRIEFS
Brand: COS
SKU: 1259526003
Price: 15.6 USD
Availability: InStock

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For information relating to environmental qualities or characteristics of this product, you can find

Product sheet relating to environmental qualities or characteristics

We are really pleased to offer you a great range of fashion with a wide selection of cosmetics. However, a few of our cosmetics contain flammable substances and therefore have delivery restrictions. Eg. nail polish, certain perfumes and nail polish removers as well as pressurized spray cans. At the same time, all our beauty items are tested to ensure that they are safe to use. It's only if you wish to return or exchange items containing flammable substances that you need to be aware that there are special transportation requirements.

Economy Shipping:  Order by Wednesday, December 11 NY/NJ/CT: Order by December 17  Standard Shipping:  Order by Sunday, December 11 NY/NJ/CT: Order by December 17  Express Shipping:  Order by Friday, December 19

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This item cannot be returned as it is part of final sale

Please read our [frequently asked questions](/en-us/customer-service/faq/).

Questions?

We’ve extended our returns period over the festive season to offer more flexibility when you shop online. Any orders placed between November 1, 2025, and December 24, 2025, can be returned up to and including January 31, 2026. 

We hope you will love everything that you order from us but if something isn’t quite right, you have 30 days from the purchase date to return any full-price item(s) and 14 days from the delivery date to return any sale item(s) that are not marked 'Final Sale' for a full refund to the original payment method for the order. We ask that items are returned clean, unworn and have all their tags on.

A $5 return fee will be deducted from your refund should you choose to use the prepaid label included with your order.

We hope you will love everything that you order from us but if something isn’t quite right, you have 30 days from the purchase date to return any full-price item(s) and 14 days from the delivery date to return any sale item(s) that are not marked 'Final Sale' for a full refund to the original payment method for the order. We ask that items are returned clean, unworn and have all their tags on.

A $5 return fee will be deducted from your refund should you choose to use the prepaid label included with your order.



Please refer to our [returns](/en-us/customer-service/returns) page for more information.

This label is used to inform the carrier that the package contains flammable substances and has special transportation requirements.

It's just as easy to return a nail polish as it is to return a pair of jeans.

The easiest way to return any beauty product classified as dangerous goods is to use the original parcel because it already has the LQ.

Dangerous goods label (pictured below). Just make sure to fill the box with paper or filler so the product will stay in place.

These bikini briefs are a timeless option for days spent in the sun. Offered in a refined black tone, they're cut in a classic shape and have bagged-out seams for a clean finish. They're a natural choice for getaway packing; mix and match them with the coordinating high-apex or bandeau bikini top. Recycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions  Shell and lining: 78% Recycled polyamide (Recycled nylon), 22% Elastane. Excluding trims / Hand wash

These bikini briefs are a timeless option for days spent in the sun. Offered in a refined black tone, they're cut in a classic shape and have bagged-out seams for a clean finish. They're a natural choice for getaway packing; mix and match them with the coordinating <a style="color: #1b1b1b; text-decoration: underline;" href="https://www.cos.com/en_gbp/product.1267484001.html" target="_blank" rel="noopener">high-apex</a> or <a style="color: #1b1b1b; text-decoration: underline;" href="https://www.cos.com/en_gbp/product.1259525001.html" target="_blank" rel="noopener">bandeau</a> bikini top. <ul><li>Recycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions </li></ul> Shell and lining: 78% Recycled polyamide (Recycled nylon), 22% Elastane. Excluding trims / Hand wash

CLASSIC BIKINI BRIEFS

These bikini briefs are a timeless option for days spent in the sun. Offered in a refined black tone, they're cut in a classic shape and have bagged-out seams for a clean finish. They're a natural choice for getaway packing; mix and match them with the coordinating <a style="color: #1b1b1b; text-decoration: underline;" href="https://www.cos.com/en_gbp/product.1267484001.html" target="_blank" rel="noopener">high-apex</a> or <a style="color: #1b1b1b; text-decoration: underline;" href="https://www.cos.com/en_gbp/product.1259525001.html" target="_blank" rel="noopener">bandeau</a> bikini top. <ul><li>Recycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions </li></ul> Shell and lining: 78% Recycled polyamide (Recycled nylon), 22% Elastane. Excluding trims / Hand wash

These bikini briefs are a timeless option for days spent in the sun. Offered in a verdant green tone, they're cut in a classic shape and have bagged-out seams for a clean finish. They're a natural choice for getaway packing. <ul><li>Recycled polyamide is polyamide made from textile waste in production</li></ul> Shell and lining: 78% Recycled polyamide (Recycled nylon), 22% Elastane. Excluding trims / Hand wash

Green

We've updated our S,M and L sizes based on your feedback. Please refer to the size guide.

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Microsoft.Targeting

Turns on / off additional Material Information in PDP drawer

Azure Insights Telemetry for nextjs, both frontend and backend

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.

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

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

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)

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

Used to enable/disable the option for overriding the navbars sticky behaviour in page settings.

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.

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)

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

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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.

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

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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: 
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This flag is for new turbo cookie compliance

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