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.

Redefining 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. This panelled piece is crafted from recycled-polyester satin that lends fluidity and an effortless drape. It's offered in a refined colour-blocked palette of carbon, champagne and pearl. Considered touches include the concealed zip closure, adjustable grosgrain bra straps and laser-cut edges for a light, clean finish.

• Shell: 100% Recycled polyester
• Product No: 1242185001

COS heralded a new era for modern, considered design. With a focus on timeless style over short-lived trends, and premium materials and craftsmanship at sensible prices, its affordable investment pieces - from contemporary dresses, coats, denim, tailoring and cashmere to stand-out accessories, including bags, shoes and jewellery - are modern wardrobe classics.