When it comes to cult high-street handbags, COS knows a thing or two. The brand has built a reputation for creating elegant, expensive-looking bags that quietly appear in the new-in section, skyrocket in popularity and, inevitably, become almost impossible to get hold of. Case in point? The now-iconic Swing Crossbody, which all but broke the internet. True to form, COS has done it again. Enter the Trullo Flap Bag—the latest sell-out style fashion people can’t stop talking about.

From stylists and fashion editors to seemingly every influencer on my Instagram feed, the Trullo has quickly amassed a waiting list of thousands—and it’s easy to see why. Minimal yet distinctive, its clean flap design, supple finish and softly folded silhouette give it the understated polish of a far more expensive designer bag. There’s a little of The Row’s quiet minimalism, Balenciaga’s sculptural proportions and even Chanel’s timeless flap-bag appeal, all distilled into a decidedly COS price point.