Prediction: This New COS Bag Will Be Impossible to Get Your Hands on Very Soon

I don't say this lightly, but I think there might be a new trending COS bag on the scene. After the brand's
Swing Crossbody Bag (£110) reached new heights of popularity this year, COS has just released the style's sleek older sister, featuring a long shoulder strap and a generous pouch. For its slouchy silhouette, spacious shape and supple leather finish, this grown-up option is set to become an everyday staple amongst the fashion crowd. In fact, it already is. I keep seeing influencer Louisa Hatt wearing hers and forever having to share the link with her followers on IG.
To me, this bag looks genuinely designer, and whilst it's still a decent investment at £180, it's significantly more affordable than its high-end counterparts. Ideal for a trip to the office or a dash around town, the quiet black bag forgoes loud colours or ostentatious design, resulting in a pared-back bag that taps into the fundamentals of luxury design. Plus, it's practical too—Hatt assured her followers that "it could easily fit a laptop."
If, like me, you appreciate timeless design and comfortable, functional fashion, then you've come to the right place. Read on to discover the new-season style the Who What Wear UK team is already shopping, as well as our other favourite COS bags.
SHOP THE COS SLOUCHY SHOULDER BAG:
SHOP OUR OTHER FAVOURITE COS BAGS:
Next Up: I Have The Row Taste on a COS Budget—Here Are 25 New-Season Buys I Love

Natalie Munro is Who What Wear UK’s news writer and has worked in the fashion industry since she graduated with a degree in Journalism from the University of the Arts London. Natalie’s experience in the industry spans journalistic and styling roles that have seen her work for publications including British Vogue, Conde Nast Traveller, Vogue Ukraine, AnOther Magazine and Elle UK.
With an interest in uncovering the latest fashion trends, Natalie takes a leading role in identifying news for Who What Wear UK. Reporting on a daily basis, Natalie focuses on trends on and off the runway, as well as street style and celebrity fashion. Natalie also creates content for Who What Wear’s social channels including TikTok and Instagram on a weekly basis.
-
Old Navy Just Launched Its New Fall Handbag Collection—and It Looks Rich
Soft faux suedes and sophisticated silhouettes.
-
I Live in Murray Hill—Here Are the 8 Places I Like to Shop for a Fashionable Fall Closet
Stylish sweaters and suedes ahead.
-
Abercrombie Sucked Me Back Into Its Orbit With These 25 Incredibly Chic Fall 2025 Finds
So, so good.
-
People With Impeccable Taste Swear By COS—21 Chic Sale Finds to Take Advantage of Right Now
Did you say 25% off? Yes, please.
-
I'm a Fashion Editor on a Budget—27 Incredibly Chic Fall Finds That Will Get You More Bang for Your Buck
Stellar under-$150 finds right this way.
-
These 32 Elevated Nordstrom and Zara Finds Make Getting Ready So Much Easier (and Chicer)
Here's to effortless outfits.
-
Refreshing My Fall Wardrobe Is My Top Priority—36 Shoes and Accessories I'm Considering Adding to My Roster
Breathe life into your fall looks.
-
By October, You'll Understand Why This Specific Bag Trend Is So Popular Among Fashion People Who "Get It"
Andy Sachs gets it.