Theory 3-Button Slash Vest

Product Insights & Style Tips

The Theory 3-Button Slash Vest channels city-smart blazer energy with a clean, confident line. Cut in 100% triacetate, it carries a crisp, subtle sheen that feels refined without trying too hard. Notched lapels frame the neckline, while a 3-button front closure keeps the front neat; chest welt pocket and front flap pockets nod to tailoring heritage. Cinching drawstrings at the waist define the silhouette, and at 29 1/2" length the piece reads sleek and elongated.

Wear it over a slim tee or crisp shirt and pair with high-rise trousers for the office, or float it over a slip dress for after-hours ease. The drawstring waist lets you tweak the fit—from a waist-skimming silhouette to a more relaxed, casual line. The vest’s pockets keep essentials close at hand, and the blazer-inspired profile layers smoothly over knits or denim, moving from day to night with minimal fuss. Dry clean.

The Theory memory of refined, modern tailoring is evident here—the kind of piece that slots into a wardrobe as a versatile anchor. In monochrome neutrals, it reads sleek and contemporary; in tonal contrasts, it offers quiet, architectural chic.