To ensure the sofa meets Italian design standards for both aesthetics and durability, prioritize kiln-dried solid wood frames (such as larch or beech) to prevent warping. For comfort and shape retention, specify high-resilience (HR) foam with a density of at least 35-45kg/m³, often layered with natural down feathers for that signature 'soft-seating' feel. If selecting leather, insist on Top Grain or Full Aniline leather; for fabrics, look for a Martindale rub count of 30,000+ to ensure commercial-grade durability.