While other factors such as support comfort, durability and cost matter when buying a mattress, it is also important to choose a mattress size that is right for you.
To choose a mattress size that fits the way you sleep, consider these factors:
Consider Your Present Mattress Size:
What is your mattress size at present? Are you happy with it? Your body adapts over time to occupying a certain amount of space, so you may find it difficult to adjust to a smaller size. You may find it more pleasant to go one size up.
Consider Your Own Size:
If you are tall or heavier, you may require a bigger mattress to be truly comfortable. For optimal comfort, consider buying a mattress that is at least 4-6 inches longer than your height.
Consider Your Sleeping Habits:
Are you a quiet sleeper, or do you frequently change positions? How about your partner? When either one of you tosses or turns, a bigger mattress could mean a better night’s sleep and fewer disturbances for the other one.
Consider Whether You Share Your Bed:
While the mattress you choose may be large enough for your own needs, consider if you share your bed from time to time with your little ones or pets. Even a small cat requires extra room, and you don’t want to be pushed into a corner for lack of space.
Consider Your Space:
This cannot be emphasized enough. Whichever piece of furniture you choose, measure your space, doorways, hallways and stairs to see if you can get the piece into your room. I am assuming you remembered to measure your room as well to make sure that your mattress fits well into your room.

