The average lifespan of a Stearns and Foster mattress is typically around seven to ten years, depending on various factors such as usage, maintenance, and care. High-quality materials and craftsmanship contribute to the durability of these mattresses, often making them a reliable choice for long-term comfort and support. To extend the lifespan, it is recommended to regularly rotate the mattress, use a proper bed foundation, and follow the care instructions provided by the manufacturer. Additionally, maintaining a clean sleeping environment can help preserve the condition of the mattress over time. Ultimately, personal experiences may vary, so it is wise to assess your own comfort and support needs throughout the years. For more specific information on mattress care and warranties, referring to the official website might provide additional insights.