The most important part of any bed is the mattress, so it is essential that you have the right one. There are basically three common types of mattresses used today: spring mattresses, memory foam mattresses and inflatable mattresses. Each type has its own benefits. The best type is simply a matter of individual taste and depends on your needs. The important thing to consider is your comfort when you lay on the mattress, and also its durability and construction basics. Whatever you get, just make sure you purchase the right size for your bed or futon frame.