The simple answer is yes—your mattress topper will need replacing. Like mattresses, you’ll want to replace your mattress topper at some point in the future. The good news is if you buy a high-quality product, it could last much longer than you think. The average lifespan of a mattress topper is a few years. With a high-quality product, however, you could be looking at a topper which lasts between 5 and 10 years. How long yours will last depends heavily on the type of topper, the quality of materials and construction, and how much use it gets. Latex is one of the most durable mattress materials, so toppers made from latex can last slightly longer than those made from foam, feathers, or polyester. Some people report their synthetic toppers don’t last very long, as they’re prone to lose shape and end up with an unevenly distributed filling. The same is true for feather toppers, which need to be regularly fluffed to stay comfortable.