Name: OPEN-BACK LONG-SLEEVED SWIMSUIT
Brand: COS
SKU: 1167177001
Price: 29.7 USD
Availability: OutOfStock

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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.

Express Shipping 

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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.

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.

This long-sleeved swimsuit is perfect for those who prefer a touch more coverage. Crafted from sculpting recycled fabric with a generous helping of stretch, it comes in a deep forest-green shade and has a scooped back with elegant ties at the neck. Wear it by the pool or styled as a top with high-waisted pants. Slim fitRecycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions  78% Recycled polyamide (Recycled nylon), 22% Elastane / Machine wash

This long-sleeved swimsuit is perfect for those who prefer a touch more coverage. Crafted from sculpting recycled fabric with a generous helping of stretch, it comes in a deep forest-green shade and has a scooped back with elegant ties at the neck. Wear it by the pool or styled as a top with high-waisted pants. <ul><li>Slim fit</li><li>Recycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions </li></ul> 78% Recycled polyamide (Recycled nylon), 22% Elastane / Machine wash

OPEN-BACK LONG-SLEEVED SWIMSUIT

This long-sleeved swimsuit is perfect for those who prefer a touch more coverage. Crafted from sculpting recycled fabric with a generous helping of stretch, it comes in a deep forest-green shade and has a scooped back with elegant ties at the neck. Wear it by the pool or styled as a top with high-waisted pants. <ul><li>Slim fit</li><li>Recycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions </li></ul> 78% Recycled polyamide (Recycled nylon), 22% Elastane / Machine wash

This long-sleeved swimsuit is perfect for those who prefer a touch more coverage. Crafted from sculpting recycled fabric with a generous helping of stretch, it comes in a deep forest-green shade and has a scooped back with elegant ties at the neck. Wear it by the pool or styled as a top with high-waisted pants. <ul><li>Slim fit</li><li>Recycled nylon reduces our demand on limited natural resources and reduces greenhouse gas emissions </li></ul> Shell: 78% Recycled polyamide (Recycled nylon), 22% Elastane. Excluding trims / Machine wash

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

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

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

Your delivery options vary depending on your location within the US.

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We accept the following payment methods for online purchases:

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.

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

Azure Insights Telemetry for nextjs, both frontend and backend

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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

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Bypass checkout/login and take user directly to CIAM page

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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

Flag that enables Digital Order Return feature
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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.

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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)

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

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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. 

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

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Purpose: Enables historical price display for products to meet regulatory compliance requirements. 
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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

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.

Flag to enable test countries.
As of today (2024-07-19) these are:
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