A split queen mattress consists of two mattresses that measure 30 by 80 inches normally. Combined, they make a standard queen-size mattress which is 60 by 80 inches. However, couples have separate beds with a split queen mattress, in a way.
In simple words, A split queen mattress size is a queen mattress divided into two smaller mattresses.

Split Queen vs. Queen mattress
Normally, not all users dig the idea of a split mattress but, the actual thing is, sleeping on two different mattresses while staying close to your partner can offer many other perks.
For instance, this would come in handy if there is a Split Queen adjustable base because both partners can adjust their sides any way they want without disturbing each other.
So cool thing about Split Queen Mattress is that such mattresses are easier to transport while Queen mattress (60 by 80 inches) is not easier as compared to split queen mattress.
A split queen mattress can become a real savior in a household that has extra-narrow doorways, especially if it is not a bed-in-a-box mattress type.
Things To Consider Before Purchasing Split Queen Mattress
An appropriate size is not the only thing that makes a perfect mattress. So, customizable support means you are the master of your slumber when the sun goes down.
When you deciding between a standard queen mattress or a split queen bed, here are a few factors to consider:
Firmness
A good mattress has to be paralleled with one’s sleeping style. So, side sleepers are usually advised to pick softer mattresses to enjoy deep sleep. Back sleepers are advised to choose medium to medium-firm mattresses, for stomach sleepers are advised to use firmer mattresses.
It will help them maintain a comparatively straight spine during the night.
Sleeper’s Weight
This factor may determine the firmness of the mattress. For instance, the petite individuals (less than 125 pounds), it is better to go one step softer for each position mentioned above.
For the heavier sleepers (over 220 pounds), it is recommended to go slightly firmer for each sleeping style.
Bed Frame
A best Split queen bed base is not hard to come by. It is possible to use a regular Queen-sized foundation as a split Queen bed base for those who are not looking for adjustability but, it has to meet some requirements, such as, for foam mattresses, the bed slats should not be spaced too far apart (no more than 3 inches).
It also should have a solid construction to provide uniform support across the surface. A central beam would come in handy in this case.
Thickness
You should remember that thinner mattresses are less durable than thicker models. The thickness of the mattress should match the height of your bed frame. It enhances comfort, for instance, pairing a low-profile foundation with a thinner mattress can make it more challenging for sleepers to get out of bed.
On the other hand, no one wants to climb onto their bed so, it is better to avoid an extra thick mattress when dealing with a tall bed frame.
Cooling
The important factor is the cooling of the mattresses. Thermoregulation can affect one’s comfort nicely, so this aspect should be taken into consideration too. The best cooling mattresses are latex and innerspring as well.
Open-cell and gel-infused models tend to perform the best when it comes to a cooler sleep. Hybrid mattresses can also sleep at neutral. In this case, the comfort layers should not be too thick or should use either latex or gel foam.
Benefits Of Split Queen Mattress
A split queen mattress offers high flexibility. It is made up of two mattresses that add up to a queen mattress size. Each side of the split queen mattress measures 30 inches by 80 inches. If you have ever moved a queen mattress you know it can be awkward due to its double-size of a split queen mattress. This is especially true when moving through smaller spaced or tight corners.
Having two pieces rather than one large piece means it is much easier to move and set up the bed. Additionally, with the two unconnected sides of a split queen mattress, you can use each with its firmness or comfort level.