seam sectional sofa

The Seam sofa by Prostoria is a modern designer sectional sofa and lounge system defined by the purity of a single sculptural volume—no loose cushions, no extra layers, just one continuous form built for comfortable, supported seating. The sectional version with chaise lounge extends that clean silhouette into a relaxed chaise sectional setup, ideal for stretching out while keeping a tailored, architectural look.

A dramatically deep backrest and armrests sweep inward in a smooth arc, creating an ergonomic, enveloping cradle that feels both structured and soft. Precise, visible stitched seams trace the geometry and “draw” the silhouette, turning a functional detail into the collection’s signature line. Minimal yet expressive, Seam delivers a quiet, iconic presence in contemporary living rooms and performs just as confidently in contract and hospitality environments—hotel lobbies, waiting areas, offices, and reception lounges—where a modern sectional sofa with chaise needs to look sharp and sit even better.