Name: THE OPEN-BACK MAXI DRESS
Brand: COS
SKU: 1242185001
Price: 165 USD
Availability: OutOfStock

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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.

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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.

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

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This piece is part of the ATELIER capsule; an exploration of the modern wardrobe, founded on the principles of luxury and exceptional design. CUTRedefining eveningwear codes, this floor-length dress is a striking way to mark the occasion. It's shaped with a rounded neckline, open back and a hooked grosgrain strap that frames the shoulders. A pair of knotted ties cascades from the back of the dress down to the hem, creating a sense of movement as you walk. CLOTHThis paneled piece is crafted from recycled-polyester satin that lends fluidity and an effortless drape. It's offered in a refined color-blocked palette of carbon, champagne and pearl. CRAFTConsidered touches include the concealed zip closure, adjustable grosgrain bra straps and laser-cut edges for a light, clean finish. Shell: 100% Recycled polyester. Excluding trims / Machine wash Back length of size 6 is 42.71&quot; / Model wears a size 6

This piece is part of the ATELIER capsule; an exploration of the modern wardrobe, founded on the principles of luxury and exceptional design. CUTRedefining eveningwear codes, this floor-length dress is a striking way to mark the occasion. It's shaped with a rounded neckline, open back and a hooked grosgrain strap that frames the shoulders. A pair of knotted ties cascades from the back of the dress down to the hem, creating a sense of movement as you walk. CLOTHThis paneled piece is crafted from recycled-polyester satin that lends fluidity and an effortless drape. It's offered in a refined color-blocked palette of carbon, champagne and pearl. CRAFTConsidered touches include the concealed zip closure, adjustable grosgrain bra straps and laser-cut edges for a light, clean finish. Shell: 100% Recycled polyester. Excluding trims / Machine wash Back length of size 6 is 42.71&quot; / Model wears a size 6

THE OPEN-BACK MAXI DRESS

This piece is part of the ATELIER capsule; an exploration of the modern wardrobe, founded on the principles of luxury and exceptional design. CUTRedefining eveningwear codes, this floor-length dress is a striking way to mark the occasion. It's shaped with a rounded neckline, open back and a hooked grosgrain strap that frames the shoulders. A pair of knotted ties cascades from the back of the dress down to the hem, creating a sense of movement as you walk. CLOTHThis paneled piece is crafted from recycled-polyester satin that lends fluidity and an effortless drape. It's offered in a refined color-blocked palette of carbon, champagne and pearl. CRAFTConsidered touches include the concealed zip closure, adjustable grosgrain bra straps and laser-cut edges for a light, clean finish. Shell: 100% Recycled polyester. Excluding trims / Machine wash Back length of size 6 is 42.71&quot; / Model wears a size 6

This piece is part of the ATELIER capsule; an exploration of the modern wardrobe, founded on the principles of luxury and exceptional design. CUTRedefining eveningwear codes, this floor-length dress is a striking way to mark the occasion. It's shaped with a rounded neckline, open back and a hooked grosgrain strap that frames the shoulders. A pair of knotted ties cascades from the back of the dress down to the hem, creating a sense of movement as you walk. CLOTHThis paneled piece is crafted from recycled-polyester satin that lends fluidity and an effortless drape. It's offered in a refined color-blocked palette of carbon, champagne and pearl. CRAFTConsidered touches include the concealed zip closure, adjustable grosgrain bra straps and laser-cut edges for a light, clean finish. Shell: 100% Recycled polyester. Excluding trims / Machine wash Back length of size 6 is 42.17&quot; / Model wears a size 6

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