As the mornings darken and the weather slowly cools, our winter capsule wardrobes are coming together. With great denim secured and loafers freshly polished, I’m turning my attention to knitwear. But not just any knitwear. I’m focused on enduring pieces: well-made, timeless designs that truly earn their place in our forever wardrobes. It’s no surprise that my first stop is COS’ cashmere jumper selection. In particular, the best-selling Rounded Pure Cashmere Crew-Neck Jumper.
Take a look at most fashion editors’ wardrobes, and you’re sure to find at least one hero COS knit. Over the years, the high-street hero has set itself apart from its counterparts when it comes to refined knits, and each year we wait in anticipation for the new collections to launch. True to form, COS turns its attention to quality and design, often so well that it could convince onlookers you’ve invested heavily in a designer piece, when actually it’s a smart buy from the high street. Whilst an array of new styles have launched for winter 2026, one best-selling design has been restocked, and I’m snapping it up immediately.
Through composition, colour and cut, COS is able to create the illusion of a designer buy at a fraction of the price. Whilst its cashmere wares are on the more expensive side, the cost per wear ensures these are smart wardrobe additions, especially when you consider the timelessness of this piece. It’s a classic crew-neck design with a contemporary relaxed silhouette, ensuring it will earn its keep in your wardrobe whilst still feeling current. As ever, the cashmere itself is incredibly soft, and the heavy-weight construction makes it a seriously cosy addition to your wardrobe.
Now, it’s back in a series of sleek shades, so scroll on to shop the COS Rounded Pure Cashmere Crew-Neck Jumper and more COS cashmere we really rate.
Shop the COS Rounded Pure Cashmere Crew-Neck Jumper
This shade is a core part of my refined winter palette.
Grey is enduring, especially in this slouchy cashmere.
Contrast the woven knit with sleek satin trousers.
This green shade has already sold out once. Move fast if you’re interested.
Shop More COS Cashmere
The funnel-neck style is currently on my wish list.
Rich burgundy will elevate your winter colour palette.
Undeniably timeless.
This also makes for a great gift.
I love playing with textures like brushed cashmere in the colder months.
The chicest cable-knit I’ve ever seen.
Scarves are now an everyday essential.
Layer in this cardigan when you need an extra dose of insulation.
Cosy cashmere extends to accessories.
Such a pretty shade.
Call upon this every single winter.
Triangle scarves are a fashion-person favourite.
