The Q3 2025 Lyst Index Proves Cos Sweaters Are Everywhere: Shop Our Faves

Every so often, one item swoops in out of nowhere and becomes inescapable. Last year, it was the humble barn jacket. In 2025, Cos’s knitwear is taking on the mantle of the must-have of season. Don’t take my word for it: The Q3 edition of the Lyst Index just dropped, and the retailer’s Chunky Cashmere Sweater was named one of the top 10 hottest products of the moment.

Every quarter, Lyst digs into the data of 160 million shoppers to generate a ranking of the hottest fashion brands and products of that period. Cos sits in third place on the former, coming in behind Saint Laurent and Miu Miu. (It rose up four spots compared to the last Lyst Index, buoyed by its see-now-buy-now Autumn-Winter 2025 runway show at New York Fashion Week and seeing a 147% increase in searches this quarter.) It made the cut on the latter, too, with its best-selling Chunky Cashmere Sweater also coming in third place on the “Hottest Products” lineup, right behind classic black Havanias flip-flops (which senior editor Halie LeSavage attributed to “The Copenhagen Effect” in our Slack channel this morning) and a pair of soft burgundy Saint Laurent loafers.