Most synthetic foam mattresses wear out in about 7 to 10 years.
That depends. If you suspect that your mattress is making you sick, leaving you in pain or discomfort, or making you feel unrested, it’s probably time to replace it. Generally speaking, the lifespan of a traditional mattress depends on the type of mattress you purchased, the size of the sleepers, and the amount of daily abuse. Most mattresses wear out in about 7 to 10 years.