For starters, at £17.50, the incredibly affordable price point has serious wow factor. But so do the trousers themselves. With over 1,700 reviews (and counting) and just over 70% leaving four-or-five star ratings, they are a bargain buy that have caught our attention.
We think they've caused a sensation with M&S shoppers because the lure of an elastic waistband is still proving way too hard to resist, especially post-Christmas.
But the beauty of the M&S Collection Jersey Wide Leg Trousers with Stretch is that they're also one of those wardrobe staples that you can dress up for work and going out, but they're comfy enough for lounging in or when sitting down for eight or more hours at your laptop.
Any wonder they've caught the eye of thousands of shoppers already.
Why we rate them
They're Comfortable (with a capital C, yes). The pull-on trousers have a soft, jersey feel with a hint of stretch, and a high, elasticated waist.
And the wide-leg cut is not too billowy, making them universally flattering for all body types.
We love that you can wear them with everything from Bretons to bodysuits, or you can also smarten them up for work with a nice shirt and a blazer.
As for going out? Just add a sparkly top with statement earrings or a sequin blazer and white T-shirt underneath.
And of course, teamed with a thick jumper and chunky boots or trainers, these trousers will easily slot into your life throughout the winter months too.
As well as black, they come in three other versatile hues: dark charcoal, dark navy, and dark khaki.
One customer even said she's "got these trousers in all the colours, they’re super."
As ever, M&S has kept in mind the varying sizes of their customers, they're available in sizes 6 to 24 and in five different lengths: extra short, petite, regular, long and extra long (there's a handy size guide that can help you work out which one is best for you).
They're washable on a 40°C delicate cycle too. And although M&S recommends ironing on a cool temperature, we reckon these won't crush easily, so that's another plus point to add to the list.
What the reviews say
Comfort, fit, quality, versatility and value for money are just some of the many positives customers have picked out when it comes to these Jersey Wide Leg Trousers with Stretch. Any wonder shoppers are buying them in multiple colours.
"This is the 4th pair I've bought in different colours but all are a great fit very comfortable for work and smart day wear."
"Love these trousers they are comfortable and are made of a lovely soft fabric. Great fit thinking of buying in another colour."
"These trousers are very good value and I think they look much more expensive than they actually are! I would say they are very comfortable and true to size and the beauty of them is their versatility as you can dress them down with trainers or up with shoes or boots."
"Lovely trousers, great fit, ideal length, excellent value for money (in fact they look far more expensive than they were). Wash well & don't need ironing if using delicate wash cycle. I've also got them in black."
"Fabulous stretchy jersey trousers with a modern wide leg. So comfortable and easy to wear."
"A very easy to wear wide leg trouser. Nice weight, wide leg with great movement. Easy to wear casually or smart enough for dinner out or the office."
Shop now: Jersey Wide Leg Trousers with Stretch | £17.50 from Marks & Spencer
Prefer a straight leg style? M&S also has a straight silhouette, available in the same soft and stretchy jersey material, and with the same affordable £17.50 price tag. You can read more about the style here.