This 1+3+1 Diamond-Tufted Upholstered Living Room Sofa Set with Gold Metal Legs, model SOF-SET-TFT-131-GLD-01, presents a polished, cohesive lounge seating solution with a fixed symmetric conversation layout. The set includes one three-seater sofa and two matching single armchairs, defined by structured diamond button tufting across backrests, softly rolled padded arms, and tapered gold-finished metal legs that lend a refined light luxury aesthetic. Each unit features uniform seat height, with gently differentiated seat depths tailored to the three-seater and individual armchair scales, creating a balanced, inviting visual profile suited to curated interior schemes. Construction prioritizes long-term durability and consistent comfort. The internal load-bearing frame uses kiln-dried birch solid wood joined with mortise-tenon joinery, paired with a 12mm thick multilayer plywood backrest substrate fitted with reinforced button anchors to hold tufting securely. Seating and back surfaces are upholstered in 1.2mm thick wear-resistant PU faux leather, with a 50000 Martindale abrasion resistance rating. Seat cushions hold a core of high-density polyurethane foam wrapped in a 20mm soft latex layer, supported by evenly spaced sinuous steel springs and polyester fiber batting, while backrests and rolled arms are shaped with soft foam padding for structured, comfortable support. The 1.2mm thick carbon steel legs carry an electroplated gold finish with 48 hours of salt spray resistance, attaching via pre-installed frame mounting plates for straightforward setup. Functional design elements support reliable everyday use: diamond button tufting secures upholstery to prevent shifting over time, fixed non-removable cushions maintain a tailored, neat fit aligned with the tufted silhouette, and four tapered legs per unit evenly distribute weight to reduce the risk of floor indentation. Padded rolled arms sit at a height that aligns with seated elbow position for ergonomic support, and buyers may select upholstery color from available standard finish options. The frame and hardware carry a 10-year recommended warranty period. The set fits a range of formal and upscale spaces, including residential family rooms, villa living areas, open-plan apartment seating zones, hotel lounges, club waiting areas, high-end executive office reception spaces, residential model home staging installations, and small boutique entry lobbies. It pairs seamlessly with 450mm tall coffee tables crafted from glass, marble, or solid wood. For procurement, note that each set ships in two cartons, requires 40 minutes of assembly time, and supports customizable upholstery color to align with project design requirements.