Choosing the right mattress is already a daunting task, but when you add a partner with different preferences, it can feel nearly impossible. What if one of you wants a soft, plush memory foam bed, and the other needs an ultra-firm mattress? The solution: a split king mattress, which allows both partners to have the mattress of their dreams.
A split king mattress consists of two twin XL mattresses placed side by side on a king-size frame. Each twin XL mattress measures 38 inches by 80 inches, so when placed together, they match the dimensions of a standard king-size bed—76 inches wide by 80 inches long. This setup can be a great solution for couples who can’t agree on a single mattress. Let’s dive into everything you need to know about split king mattresses.
What Is a Split King Mattress?
A split king mattress is essentially two twin XL mattresses that are placed side by side on a king-size bed frame. This setup gives each partner the freedom to choose their ideal mattress, offering a customized sleep experience without the need to compromise.
Benefits of a Split King Mattress
A split king mattress offers several advantages for couples, especially when each person has different sleep preferences.
Perfect for Couples with Different Preferences
Everyone has unique comfort preferences. Some people may need a softer mattress, while others may prefer something firmer. A split king mattress allows each person to choose the mattress that suits their needs. However, for the best results, make sure both mattresses are the same height, so they align perfectly on the frame.
Compatibility with Adjustable Bases
If you or your partner struggle with snoring or other sleep issues, a split king mattress pairs well with an adjustable base. Adjustable bed frames let each person independently adjust their side of the bed, providing customized positions. Elevating the head of the bed can help alleviate snoring and symptoms of acid reflux, promoting a better night's sleep for both of you.
Less Disturbance from Movement
One of the biggest advantages of a split king mattress is that it eliminates motion transfer. If your partner tosses and turns, their movements won’t disturb your side of the bed. Since the mattresses are separate, movement on one side won’t travel to the other, helping both of you sleep undisturbed.
Drawbacks of a Split King Mattress
While there are many benefits to a split king mattress, there are also some potential downsides to consider.
The Midline Ridge
Since a split king mattress is made up of two separate twin XL mattresses, there will be a ridge in the middle where the mattresses meet. This can be a drawback for activities like cuddling or sex. The ridge may disrupt the seamless feel of the bed. To minimize this, ensure both mattresses are the same thickness, and consider adding a mattress topper to smooth out the surface.
Higher Price
A split king mattress tends to be more expensive than a regular king-size mattress. Because you are buying two separate mattresses, the cost is higher. However, many people find the investment worth it due to the customized sleep experience and improved sleep quality it provides.
Requires Two Fitted Sheets
Since you’re using two separate mattresses, you’ll need two fitted sheets. This means double the effort when it comes time to change the sheets, which can be an inconvenience for some.
Size Considerations
A split king mattress is the same size as a standard king mattress (76 inches wide by 80 inches long). If you have a smaller bedroom, the width of a split king might be too much. If space is limited, consider a queen-size mattress, which is 16 inches narrower.
Best Bed Frames for Split King Mattresses
While you can place a split king mattress on any king-size bed frame, you get the most flexibility with an adjustable base. We recommend adjustable bases if you or your partner snore or experience acid reflux. An adjustable frame allows you to elevate the head of the mattress for better sleep hygiene, and only one person needs to adjust their side.
For a high-quality adjustable base, consider the Saatva Lineal base for its style and durability. If you're on a budget, the Nectar adjustable base is an affordable option.
What to Look for in a Split King Mattress
When shopping for a split king mattress, here are the main factors to keep in mind:
Firmness
Firmness is a key factor when selecting a mattress. It affects both comfort and support. For a medium-firm mattress that offers the right balance, consider options like the Nectar mattress. However, firmness preferences vary depending on your sleeping position and body type.
- Back sleepers: Typically prefer medium-firm mattresses.
- Side sleepers: Often prefer a softer mattress to alleviate pressure on the shoulders and hips.
- Stomach sleepers: Need a firm mattress to maintain proper spine alignment.
Feel
Consider how you want the mattress to feel:
- Innerspring mattresses are bouncy and supportive.
- Foam mattresses tend to feel slow-moving and soft, enveloping the sleeper.
- Hybrid mattresses combine the best of both worlds with a supportive coil base and a cushioned foam layer.
- Latex mattresses are responsive and cooling, with a natural bounce.
Cooling
If you’re a hot sleeper, temperature regulation is important. Hybrid mattresses tend to sleep cooler than memory foam mattresses, but many companies now infuse cooling gel or use breathable materials to keep you comfortable.
Edge Support
Good edge support is important for couples who want to maximize their space on the bed. With a split king mattress, you should look for mattresses with reinforced edges to prevent feeling like you’re rolling off.
How to Connect Twin XL Mattresses to Make a Split King Bed
If you want to save money, you can purchase two twin XL mattresses and combine them to make a split king. Here’s how:
- Choose two mattresses: Ensure both are the same height for even alignment. You can use different firmness levels, but it’s best if both mattresses are the same type to avoid uneven wear.
- Place the mattresses on a king-size bed frame: You can use a standard king-size frame or an adjustable bed base.
- Add a bed bridge: A bed bridge is a foam piece placed between the two mattresses to prevent a gap.
- Use a mattress topper: A topper will help smooth out the surface, making it feel more like a single mattress.
- Add king-size sheets: Finally, cover your new split king with king-size sheets and enjoy a great night’s sleep.
FAQs
What is the purpose of a split king mattress?
A split king mattress allows couples to each choose their preferred mattress type and firmness level, without having to compromise. It’s an ideal solution for partners with different sleep preferences.
Can you feel the split in a split king bed?
Yes, you can feel the split in a split king bed, but the extent depends on the mattresses you choose. Opt for mattresses with the same thickness to make the ridge less noticeable.
Is a split king the same as two twin XLs?
Yes, a split king is essentially two twin XL mattresses placed next to one another, with the same dimensions as a standard king-size bed (76 inches by 80 inches).
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