Name: OPEN-BACK COTTON MAXI DRESS
Brand: COS
SKU: 1277936002
Price: 82.5 USD
Availability: InStock

EXPRESS SHIPPING: ORDER BY 12/19 TO RECEIVE BY 12/24

https://cosstores.attn.tv/p/LAR/landing-page

Gift Card

Delivery Methods

Returns

Contact Info

Women

Sale

New Arrivals

Cashmere Knitwear

Cashmere

View All

All menswear

Make sure that your favourite items remain long-loved pieces for years to come; read our 

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

HOLIDAY SHIPPING CUTOFFS

Delivery

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.

Sleeveless dresses

HOW TO MEASURE GARMENT

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.

Effortless silhouettes are a tenet of the Spring Summer 2025 collection. Crafted from naturally breathable cotton, this buttermilk-hued dress is cut in a voluminous shape with a nipped-in waist, flared skirt and subtle cut-out detail at the back. Regular fitButton closure Shell and lining: 100% Cotton. Excluding trims / Machine wash Back length of size 6 is 55.12” / Model wears a size 6

Effortless silhouettes are a tenet of the Spring Summer 2025 collection. Crafted from naturally breathable cotton, this buttermilk-hued dress is cut in a voluminous shape with a nipped-in waist, flared skirt and subtle cut-out detail at the back. <ul><li>Regular fit</li><li>Button closure</li></ul> Shell and lining: 100% Cotton. Excluding trims / Machine wash Back length of size 6 is 55.12” / Model wears a size 6

OPEN-BACK COTTON MAXI DRESS

Effortless silhouettes are a tenet of the Spring Summer 2025 collection. Crafted from naturally breathable cotton, this buttermilk-hued dress is cut in a voluminous shape with a nipped-in waist, flared skirt and subtle cut-out detail at the back. <ul><li>Regular fit</li><li>Button closure</li></ul> Shell and lining: 100% Cotton. Excluding trims / Machine wash Back length of size 6 is 55.12” / Model wears a size 6

Effortless silhouettes are a tenet of the Spring Summer 2025 collection. Crafted from naturally breathable cotton, this buttermilk-hued dress is cut in a voluminous shape with a nipped-in waist, flared skirt, and subtle cut-out detail at the back. <ul><li>Regular fit</li><li>Button closure</li></ul> Shell and lining: 100% Cotton. Excluding trims / Machine wash Back length of size 6 is 55.12” / Model wears a size 6

Beige

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

Women's ready to wear tops

About Us

https://career.cos.com/coscareer/en_us.html

https://press.cos.com/content/cospress/en/home.html

Store Locator

Sustainability

Features

The company

Personal Info

Account

Holiday Faqs

Payment

Product Care

Size Guide

Fit Guide

Student Discount

Assistance

Privacy Notice

Terms Of Use

Gift Card Terms

Cookie Notice

Ca Supply Chain

Do Not Sell My Personal Data

Legal

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

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

https://www.pinterest.com/cos/

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

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

Reviews Terms and Conditions 

Shopping Bag

Members receive free shipping with a minimum spend of {{currencySymbol}}50.

Favourites

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

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?

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

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

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&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 personalized email and text messages in accordance with the 

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 

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

I would like to receive personalized promotions from COS a brand of the H&M Group via email and text messages. I can withdraw this consent at any time. I confirm that I'm 16 years old or older. I acknowledge that my personal data will be processed by H&M Group in accordance with the 

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

Africa

Asia

Europe

Middle East

North & South America

Oceania

Turns on / off additional Material Information in PDP drawer

Azure Insights Telemetry for nextjs, both frontend and backend

Microsoft.Targeting

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

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

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