Name: OPEN-BACK COTTON MAXI DRESS
Brand: COS
SKU: 1277936002
Price: 165 USD
Availability: InStock
Rating: 4 (1 reviews)

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Spring Summer 2026

Spring Summer 2026 Runway

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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.

We deliver to all states including P.O. boxes, but we are unable to ship APO/FPO/DPO addresses or US Territories.

Some fragrance products are classed as dangerous goods and therefore cannot be delivered to the below locations:

4-7 business days. Orders placed Monday–Friday will be delivered within 4–7 business days. Orders are delivered Monday–Saturday to residential and commercial addresses.

Economy Shipping 

 3-5 business days. Orders placed Monday–Friday will be delivered within 3–5 business days. Orders are delivered Monday–Saturday to residential addresses and commercial addresses.

Standard Shipping 

1-2 business days. Orders placed by 12pm EST Monday to Friday will ship out same day and be delivered within 1-2 business days. Orders placed after 12pm EST will be shipped out next business day and delivered within 1-2 business days. Orders placed after 4pm EST on Friday will be delivered on Tuesday at the earliest. We don’t offer Express shipping service to Alaska and Hawaii at this time.

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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.

Returns

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

Cotton is a soft and versatile natural fibre harvested from the cotton plant.

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

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Please note, stock levels may vary. For further information, please contact the store.

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Merchandise purchased online at a discount of 50% off or more is considered Final Sale. Items purchased as Final Sale are not eligible for return, exchange or credit without exception and merchandise is sold as is.

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.




Any questions? Please visit our [returns](https://www.cos.com/en-us/customer-service/returns) page. 


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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.

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

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

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

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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

Purpose: Enables unit pricing display for multipack products to meet regulatory compliance requirements.
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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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