This is not sponsored. COS does not know I exist either.
I spent six weeks looking for work trousers online. I had a list of requirements. Wool or wool blend. High waist. Wide leg but not so wide it looks like I borrowed them. Dark colour. Under €150. I read reviews. I compared inseam measurements. I bookmarked things and then closed the tabs and started again.
On the first day of looking, I had walked past the COS window and seen these trousers on the mannequin. I knew immediately they were what I wanted. I bought them six weeks later, which I found mildly annoying about myself. They were fine, which made it worse.
What They Actually Are
The COS Wide-Leg Tailored Twill Trousers are a high-waist, wide-leg trouser in a wool-blend twill. The composition is 54% recycled polyester, 44% RWS wool, 2% elastane. The lining is 100% cotton. They have sharp front pleats, a pressed centre crease, and a hook-and-bar zip closure. Inside the waistband there is an adjustable tab — you can tighten or loosen the fit by about two centimetres without touching the outer silhouette. The legs are wide and fall straight to the floor.
I bought them in black, size 36. I am 170cm.
The price is €120. I bought them in-store.
The Fabric
Twill is a different proposition to the hopsack wool I have in my Arket blazer. Where hopsack is open and textured, twill is a tight diagonal weave — smooth, dense, and considerably more opaque. It drapes with weight rather than moving lightly. For trousers that need to hold a pleat and a pressed crease across a full working day, this is exactly what you want.
The wool content gives the fabric enough structure that the wide leg does not go limp or collapse. The recycled polyester adds resilience. The 2% elastane means they are not rigid — there is enough give that sitting for several hours is not uncomfortable. That matters more than it sounds when you are at a desk from eight in the morning.
The cotton lining is a genuine improvement over the acetate lining in my Arket blazer. It breathes considerably better. At the end of a long day in a heated office I am not aware of the lining in the way I sometimes am with the blazer. That is a small thing that adds up over a week.
Six weeks in, no pilling, no shine on the seat, no loss of shape. The pleat is still sharp. The crease is still there. I wash them on a wool cycle and hang them to dry, which takes about a day. No dry cleaning required. I have put them through six washes and nothing has changed — no shrinkage, no distortion, the crease reforms when hung correctly. That is what I want from a trouser I wear three times a week.
One note on lint: twill is smoother than hopsack and attracts noticeably less. I still keep a lint roller at my desk, but I use it before important meetings rather than before every meeting. The difference is real.
The Fit
I tried them on in-store, which I would recommend for any wide-leg trouser because the length question is real. At 170cm the trousers fall to the floor with a slight sweep — not a puddle, but they graze the ground when I wear flat shoes. With loafers this looks intentional. With heels it looks clean. If you are under 165cm I would try them on before ordering, or plan to have them hemmed. The alteration is straightforward — no buttons, no slit, just a plain hem. A tailor can do it for under €15.
The adjustable waistband tab is the detail I use most. My waist is smaller than my hips and standard sizing usually forces a choice — fits the hip, gaps at the waist, or vice versa. The tab closes that gap cleanly without altering how the trousers look from the outside. It is a simple mechanism and it works. I adjust it slightly depending on what I am wearing underneath — slightly looser with a tucked shirt, slightly tighter when I want the waist to sit more precisely.
The front pleats sit flat when I stand and open slightly when I walk, which is how a pleat is supposed to behave. They do not bunch or pull. The high waist sits properly at the natural waist — not labelled high-rise and then sitting at the hip, which is a thing that happens more than it should.
I bought a 36, which is my standard COS size. The fit through the hip is relaxed without being loose. There is room to move without the fabric doing anything unexpected. I have sat through three-hour meetings in these and stood up looking the same as when I sat down, which is genuinely not guaranteed with every trouser.
How I Wear Them
Most days: White shirt untucked, black loafers. This is the combination I reach for without thinking. The shirt hem sits just below the waistband. It is a complete business casual outfit that requires no decisions at six forty-five in the morning.
When I need the outfit to do more work: The Arket Hopsack Wool Blazer in olive over a black fitted top, cognac loafers. Black and olive is a combination that looks considered without looking like you planned it. This is what I wore to two client meetings in the last month. It worked in both rooms.
Long days when I do not want to think: Black fine-knit rollneck, the trousers, black loafers. Everything the same colour except the shoes. It is the closest I get to a uniform and I wear it approximately once a week. For anyone who finds the daily decision about office outfits exhausting, this combination removes the question entirely.
The One Real Downside
The adjustable tab is the only size adjustment available at point of purchase. There is no option for different inseam lengths — you get one length and you work with it. For me at 170cm this is fine. For anyone shorter it means a trip to a tailor, which is a minor inconvenience but worth factoring in if you are ordering online and live somewhere without easy access to alterations.
The other thing: the pressed crease requires a bit of attention after washing. If you pull them out of the machine and hang them carelessly, the crease does not always reform perfectly. I hang them from the waistband with the legs hanging straight. It takes thirty seconds and the crease is back by morning. If you are someone who does not want to think about that, these are not the trousers for you. If you do not mind it, it is not a real problem.
Final Thoughts
Six weeks in, I have worn these at least three times a week. They look the same as the day I bought them. The pleat holds, the crease holds, the fit holds. The cotton lining is better than I expected at this price point. The waistband tab solves a problem I have had with trousers for years. The length works for me at 170cm without alteration.
For anyone building a practical business casual wardrobe, a pair of black wide-leg trousers that hold their shape and work across different levels of formality is one of the more useful things you can own. These do that.
I spent six weeks researching these trousers. I should have bought them on the first day. That is my honest assessment and I am mildly annoyed about it still.
Shop: cos.com
