The lifespan of the baby beds depends on several factors. And the good news is that you can control most of them. However, remember that most beds have a lifespan of about five years, depending on how you maintain them. Certain types like two in one mattresses stay for a long time and grow with your baby. But, make sure that you replace the baby beds at the right time. That’s because you need to provide your babies and toddlers with the proper support they need while sleeping.