I Just Tried On COS's Cult Linen Trousers—They're Elegant, Heatwave-Proof and Selling Out Fast
I'm living in linen this summer, and these barrel-leg trousers are about to give my looks a contemporary update.
Linen trousers are one of the summer staples you'll find in every great capsule wardrobe. They're polished yet relaxed, breezy enough for the varying temperatures and will rise to all occasions, whether you're heading to the office or packing up for your summer holidays. In the midst of yet another heatwave, I set about to find a pair of linen trousers that have a high-quality composition, a contemporary feel and a timeless colourway. Naturally, I turned to COS.
Florrie wears the COS Ribbed Cotton Tank Top (£15) and Elasticated Linen Barrel-Leg Trousers (£75)
If refined silhouettes, timeless designs and minimalist colourways feel like descriptors of your wardrobe, then COS is one high street brand that should be firmly on your radar. The brand is a favourite amongst editors and stylish people thanks to its offering of affordable pieces that could easily pass for designer, thanks to the attention to detail shown in composition and form. Over the years, the brand has been responsible for a series of cult buys from the beloved cashmere knits of winter to the highly sought-after summer staples. Now, the Elasticated Linen Barrel-Leg Trousers are set to join the brand's best-sellers list.
The 100% linen composition sets these trousers up to be the perfect antidote to sweltering days. The pared-back design features clean lines and a soft barrel-leg silhouette, which updates these classic trousers for 2026. The elasticated waistband adds to the comfortable ease of these trousers, a necessity in the warmer months. After trying them on, I immediately imagined all the ways these would work hard in my wardrobe, paired with oversized shirts for the office, or thrown on with swimwear when heading from the beach to lunch. As the best COS buys tend to move fast, scroll on to shop the Elasticated Linen Barrel-Leg Trousers, and shop more COS summer staples.
Shop the COS Elasticated Linen Barrel-Leg Trousers
Shop More COS Summer Staples

Florrie embarked on her fashion journey whilst studying in Aix-en-Provence, she began to write her dissertation on the history of fashion and landed her first role at Harper’s Bazaar. Following this, she interned for various publications including Elle, Grazia and Marie Claire before joining the fashion team at Conde Nast Traveller. There, she contributed to international photoshoots, styled pages and covers, and produced engaging digital content. Over eight years of fashion industry experience, Florrie has honed her skills from styling e-commerce photoshoots to personal shopping. Florrie first joined Who What Wear UK as a freelancer before becoming the Commerce Writer. Now, as the Shopping Editor, she monitors current trends, new-in styles, wardrobe heroes and how best to style them.