Name: OPEN-BACK SLEEVELESS SHIRT
Brand: COS
SKU: 1239289001
Price: 81 CHF
Availability: InStock

SALE: 200+ NEW PIECES ADDED & FURTHER REDUCTIONS

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SALE: 200+ NEW PIECES ADDED

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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 pressurised 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.

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We hope you will love everything that you order from us but if something isn't quite right, you have 30 days to send it back to us.

Please note any purchase made online, from 5th November 2025 - 10th December 2025 can be returned up until 9th January 2026. For purchases made from 11th December 2025 onwards, our normal returns policy will apply. 

We will refund the purchase price via the payment method you selected within 14 days after we receive your return. We kindly ask that the items be returned clean, unworn, and with all labels attached.

Please note, a return fee of 3.5 CHF will be deducted from your refund if your order is returned online. Some exclusions apply. 

Please note, from 06.03.2025 a return fee of 3.5 CHF will be deducted from your refund if your order is returned online. Some exclusions apply. 

We hope you will love everything that you order from us but if something isn't quite right, you have 30 days to send it back to us.

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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.

We have added this information due to new EU regulations and to give our customers greater transparency about how product prices change over time. Under EU price display regulations, any announced price reduction must indicate the lowest price for a product in the last 30 days – we refer to this as 'lowest historical price'.

The COS womenswear team play with unexpected silhouettes for this season's directional shirting. Cut from crisp white cotton-poplin, this sleeveless version has classic features on the front, from the pointed collar to the buttoned placket. Turn to the back and you'll find a dramatic open detail that overlaps at the nape.&nbsp;&nbsp;Relaxed fitButton closure&nbsp;Shell: 100% Cotton. Excluding trims / Machine wash&nbsp;Back length of size XS/S is 73cm / Model wears a size XS/S

The COS womenswear team play with unexpected silhouettes for this season's directional shirting. Cut from crisp white cotton-poplin, this sleeveless version has classic features on the front, from the pointed collar to the buttoned placket. Turn to the back and you'll find a dramatic open detail that overlaps at the nape.&nbsp;&nbsp;<ul><li>Relaxed fit</li><li>Button closure</li></ul>&nbsp;Shell: 100% Cotton. Excluding trims / Machine wash&nbsp;Back length of size XS/S is 73cm / Model wears a size XS/S

XS/S

OPEN-BACK SLEEVELESS SHIRT

The COS womenswear team play with unexpected silhouettes for this season's directional shirting. Cut from crisp white cotton-poplin, this sleeveless version has classic features on the front, from the pointed collar to the buttoned placket. Turn to the back and you'll find a dramatic open detail that overlaps at the nape.&nbsp;&nbsp;<ul><li>Relaxed fit</li><li>Button closure</li></ul>&nbsp;Shell: 100% Cotton. Excluding trims / Machine wash&nbsp;Back length of size XS/S is 73cm / Model wears a size XS/S

White

Product contains at least 0% recycled materials.

Product contains at least 76.99% recycled materials

We've updated our sizes based on your feedback. Please refer to the size guide.

Women's ready to wear tops

Womens Tops, Shirts & Blouses

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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
- Order Return Block on different pages

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)

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

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.

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

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.

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