Buying a mattress that's too small is one of the biggest mistakes new bed-buyers make. Couples who have been sleeping on a full size mattress, also known as a "double", since they've been together may think they have enough room; that is until they soon learn that each person has about as much sleeping space as a crib!
A twin mattress is the smallest possible mattress size, other than a crib-sized mattress. Twin mattress dimensions are approximately 38 inches wide by 75 inches long. Both twin and full sizes are approximately 75 inches long, which may be too short for some adults, especially men.
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TWIN XL MATTRESS
A twin XL mattress is a good alternative for those living in tight spaces. The XL offers several inches in length, approximately 80 inches, but remains around 38 inches in width. The XL twin is a popular choice in college dormitories.
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A full mattress, sometimes still called a double mattress, measures 53 inches wide, which is just 15 inches wider than a twin size (single). That leaves each partner only 27 inches of personal space, or about the width of a crib. Both twin and full sizes are approximately 75 inches long, which may be too short for some adults, especially men.
Recommendations: A full size bed is only enough space for a single sleeper and only if the person is under 5 feet 5 inches tall. Parents are increasingly choosing full size over twin for teenage bedrooms. Parents are even making this choice for younger children in to give themselves a more comfortable place to rest when reading together at tuck-in time.
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FULL XL MATTRESS
The only difference between a full mattress and a full XL is the length. The XL offers approximately 5 extra inches in length measuring around 80 inches total. This is a perfect choice for those who may not have room for a queen size mattress. Please keep in mind that the full XL mattress is usually the same price as a queen due to the retooling of machinery.
Queen mattress dimensions are 60 inches wide by approximately 80 inches long - 6 inches wider and 5 inches longer than a full size mattress. These added inches can make all the difference in comfort, especially for couples, and have made the queen size mattress today's most popular mattress size. However, with 30 inches of personal space, each adult still has 9 inches less width than if they slept alone in a twin bed.
Recommendations: Queen size is a good choice for guest rooms, smaller master bedrooms and for couples who prefer close quarters. It's also a great choice for single sleepers who are also "sprawlers."
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The king size mattress dimensions are 76 inches wide by approximately 80 inches long - about 18 inches wider than a queen. This is the closest a couple can come to having as much personal space (38 inches) as each would have on a twin bed. In fact, two twin extra-long beds pushed together are about the same size, an option that can offer a flexible arrangement for a guest room.
Recommendations: A king size mattress is the best choice for couples that want maximum personal sleeping space. It's also the best bet to accommodate that time on Sunday morning when children may pop into bed - or if the pets in your house have mattress privileges! However, size can be a problem. Even with a "split boxspring" - two twin-size foundations to support it - to make a king set more manageable, it may be too big for some bedrooms or too bulky to navigate through some corridors, doors and stairwells. It's a good idea to break out the tape measure to check your room dimensions if there is any doubt.
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KING SPLIT MATTRESS
The king split mattress has the same overall measurements as the king mattress, but it comes as two pieces. Typically, each piece measures about 38 inches wide by 80 inches long. A king split mattress allows for independent movement for each individual. If you have a narrow staircase or hallway, the split mattress eases the moving and assembly process as well.
CALIFORNIA KING MATTRESS
Most commonly found on the west coast, this mattress is ideal if you are very tall. The California king mattress measures approximately 72 inches wide by 84 inches long - 4 inches narrower and 4 inches longer than a regular king.
CALIFORNIA KING SPLIT MATTRESS
The California king split mattress has the same overall measurements as the California king mattress, but it comes as two pieces. Each piece measures approximately 36 inches wide by 80 inches long. Like the king split, the two individual pieces allow for independent movement for each individual. If you have a narrow staircase or hallway, the split mattress eases the moving and assembly process as well.