There’s no denying that latex mattresses are investments. Most things you buy with a 20-year shelf life are. Some people don’t even buy houses expecting to live in them for 20 years or longer. Even today’s cars generally last a few years before being traded in for a newer, shinier model. But, when you’re making the investment in a natural latex mattress, the best mattress for the money is the reward of a good night’s sleep for the next twenty years or more.