SIR the Label Marius Knit Sweater in Black
The SIR the Label Marius Knit Sweater in Black comes from SIR. (Separates, Intimates, Ready-to-wear), the Australian label founded in 2014 by Nikki Campbell and Sophie Coote. Coveti stocks it as part of our Sweaters edit, and every piece is checked for authenticity before it leaves us.
This sweater from SIR the Label is made in mohair wool knit with a soft touch. Look for the cocoon sleeves and rolled neckline. The colour is black. Wear it for cool mornings and long weekends.
Quick Facts
- Brand: SIR the Label, Australia, founded in 2014 by Nikki Campbell and Sophie Coote, flagship store in Bondi, Sydney
- Product: Marius Knit Sweater in Black
- Collection: Spring Summer 2026
- Colour: Black
- Material: 56% mohair, 14% wool, 26% cotton, 3% nylon, 1% spandex
- Size and fit: Offered in letter sizes. Take your usual size. The model is 178 cm tall and wears SIR size XS.
- Origin: designed in Australia
- Authenticity: 100% authentic SIR the Label, verified by Coveti
- Delivery and returns: the terms for your country are in the Coveti logistics and returns protocol

How to Wear the Marius Knit Sweater in Black
Wear the Marius Knit Sweater with a satin midi skirt. For a different look, try tailored trousers and loafers.
Good for cool mornings and long weekends. For more ideas, browse the full SIR the Label edit.
PRODUCT DETAILS
| Brand | SIR the Label, Australia |
| Category | Sweaters |
| Colour | Black |
| Material | 56% mohair, 14% wool, 26% cotton, 3% nylon, 1% spandex |
| Size and fit | Offered in letter sizes. Take your usual size. The model is 178 cm tall and wears SIR size XS. |
| Care | Dry clean only, do not bleach, do not tumble dry, cool iron, cover hardware, store garment folded, do not hang. |
| Origin | designed in Australia |
| Style code | SIR-MARIUS-KNIT-SWEATER-BLACK |
About SIR the Label
SIR the Label is an Australian label founded in 2014 by Nikki Campbell and Sophie Coote. The name stands for Separates, Intimates, Ready-to-wear, and the house now has a flagship in Bondi and stores in Sydney, Melbourne, Brisbane and Perth. Its look is relaxed and grown up: silk slip dresses and bias gowns, linen and cotton for summer, sharp tailoring in wool suiting, fine knits and a swimwear line built on prints that run through the whole collection. SIR designs to its own 0 to 4 sizing, which Coveti shows on the UK ladder so you can choose with confidence.
“The Marius Knit Sweater is the kind of sweater I reach for again and again. Quiet, but it always looks considered.”
Gemma Deeks, Fashion Editor at Coveti
How SIR the Label Compares
Shoppers looking at SIR the Label often also consider
Posse,
Christopher Esber and
Aje from Australia, and
Toteme for the same pared back mood.
Frequently Asked Questions
Is the SIR the Label Marius Knit Sweater in Black authentic?
Yes. Every SIR the Label piece sold by Coveti is 100% authentic and is checked before dispatch.
What size should I order in the Marius Knit Sweater in Black?
Order your usual size.
What is the Marius Knit Sweater in Black made of?
The Marius Knit Sweater in Black is made of 56% mohair, 14% wool, 26% cotton, 3% nylon, 1% spandex.
How do I care for the Marius Knit Sweater in Black?
Dry clean only, do not bleach, do not tumble dry, cool iron, cover hardware, store garment folded, do not hang.
Where is SIR the Label from?
SIR the Label is an Australian label with its flagship store in Bondi, Sydney. This piece: designed in Australia.
Who founded SIR the Label?
Nikki Campbell and Sophie Coote founded SIR. in 2014. The name stands for Separates, Intimates, Ready-to-wear. The label is known for silk dresses, easy tailoring, linen and swimwear with a relaxed Australian line.
How does delivery work?
Delivery options, duties and returns depend on your country. The full terms are in the Coveti logistics and returns protocol.
More from SIR the Label at Coveti
Last updated 13-Oct-26 | Curated and authenticated by Coveti























