Open-Back Blazer and Wide-Leg Trouser Suit, Black

A black two-piece suit with an open back on the blazer

This is a matching suit of a blazer and wide-leg trousers, all in solid black. The blazer has a large open back with ties at the waist, which gives a classic tailored silhouette from the front and a bare, unexpected line from behind.

The fabric is 100% polyester with no stretch, and the fit is regular through the blazer and high-waisted on the trousers. It comes in sizes XS to 2XL, with the trouser length running from 109 cm to 114 cm.

At a glance

The piece: a tailored suit with a twist at the back

We sell this suit as No brand. The supplier names no maker, so we describe it only from what their facts and the photos show: a two-piece set in black, cut from a smooth non-stretch polyester.

The blazer reads as a standard tailored piece from the front: notched lapels, structured shoulders, long sleeves, flap pockets at the hip and one visible button. Turn around and the back is open from below the collar down to the waist, closed only by two fabric ties that you fasten at the lower back. The trousers are high-waisted and cut in a full wide leg that falls to the ankle or just over the shoe.

Who it's for

For you if you want a suit that works for an event but does not look like every other black suit. It suits someone who likes a sharp front silhouette and a more revealing detail at the back, and who is comfortable wearing a blazer without a top underneath or with a thin camisole.

The sizes run from XS with a 98 cm bust and 68 cm waist up to 2XL with a 124 cm bust and 94 cm waist. Because the fabric has no stretch, compare the flat measurements to a suit or blazer you already own rather than to your body measurements.

Closer look: the details we can confirm

• Two-piece set: blazer + wide-leg trousers (supplier)
• Blazer with open back and ties at the back waist (supplier; photos confirm the cutout shape)
• Notched lapels and flap pockets on the blazer (supplier)
• Structured shoulders and long sleeves on the blazer (photos)
• One visible front button on the blazer (photos)
• High-waisted, full-length wide-leg trousers (supplier)
• Non-stretch fabric, regular fit (supplier)
• Solid black colour with a smooth matte surface (photos)

Fabric and feel: smooth non-stretch polyester

The supplier declares the fabric as 100% polyester, a single fibre. In the photos the surface is smooth and matte, with enough body to hold the structured shoulder line of the blazer and the wide shape of the trouser leg.

There is no stretch in the fabric, so the fit depends entirely on the measurements. The supplier gives no care instructions, so follow the sewn-in label when you clean it.

Fit and measurements

The blazer has a regular fit through the body, with a bust that goes from 98 cm in XS to 124 cm in 2XL, measured flat. Its length runs from 69 cm to 74 cm, so it sits around the hip on most bodies. The sleeves are 60 cm to 65 cm long.

The trousers sit high on the waist, with a flat waist measurement of 68 cm in XS up to 94 cm in 2XL. The hip goes from 94 cm to 120 cm, and the inside leg is not given; the total trouser length is 109 cm to 114 cm. The leg is wide and straight from the hip down. All figures are measured flat by the supplier, and they note a 2-3 cm difference is normal.

Styling: bare back or layered

Wear the blazer on its own with nothing underneath for a strong evening look, or layer a thin black camisole or a fitted turtleneck under it for more coverage and a softer feel. The ties at the back can be tied in a bow or left hanging loose.

For the office, pair the trousers with a white shirt and the blazer buttoned, and let the open back show only when you take your coat off. For a night out, add heels, small gold earrings and a clutch. The model in the photos carries a small black bag and wears gold jewellery and heels; those are not included with the suit.

Occasions

Wear the full suit to a dinner, a birthday, a work event or a city evening out. You can also wear the pieces separately: the blazer with jeans and a t-shirt, the trousers with a knit and loafers. It is a set that gives you two separate garments as well as a coordinated look.

Care: follow the sewn-in label

The supplier data has no care instructions for this suit, so follow the label sewn into the blazer and the trousers. As general practice for polyester suiting: hang both pieces on wide hangers between wears to keep the shape, and brush off any surface dust before cleaning.

The wow detail: the open back on a tailored blazer

Most tailored blazers are designed to be seen from the front. This one puts the statement at the back: a clean, deep cutout framed by the collar and the shoulder line, closed only by two simple ties. It means the suit reads as classic and polished when you walk in, and reveals something more unexpected when you turn away.

You can also see how this suit looks on your own avatar in the Magic Mirror before you order, and Lucy, our AI stylist, can build a full look around it.

Fashion that gives back

5% of each sale goes to a cause you choose. The causes are matched to 11 of the 17 SDGs, and you decide where your share goes.

Our promise

Ships from our partner warehouse in China. Usually 8–15 business days to your door, with tracking. Delivery is free within the EU on orders from €69. Below €69 it costs €4.95 in the Netherlands and €6.95 elsewhere in the EU.

Returns: 14 days from delivery for every order, as long as the suit is unworn, still has its tags and is in the original packaging. Our promise is plain: if what arrives does not match what this page says, send it back and we refund you, with the return postage on us.

Find more matching sets and suits in our women's suits collection.