The lifespan of a mattress generally ranges from 7 to 10 years, though this can vary significantly based on the materials used and the quality of construction. High-quality natural latex mattresses are the most durable, often lasting 10 to 20 years, while high-density memory foam or hybrid models typically perform well for 8 to 12 years. In contrast, traditional innerspring or pillow-top mattresses tend to have shorter lifespans, often requiring replacement within 5 to 8 years. Several external factors also influence longevity, including the sleeper's weight and position, as heavier pressure can lead to premature sagging. Environmental conditions such as high humidity, which is common in regions like Chengdu, can also degrade synthetic materials faster. To maximize a mattress's lifespan, it is recommended to use a breathable mattress protector, maintain proper bedroom ventilation, and rotate the mattress every three to six months to ensure even wear. Ultimately, the need for replacement is best signaled by visible sagging, persistent aches upon waking, or a noticeable decline in sleep quality.