Split King Mattresses
Enjoy personalized comfort with our Split King Mattresses at Ortho Mattress. A split king mattress is made of two twin XL mattresses placed side by side, allowing each sleeper to choose their own comfort level—perfect for couples with different sleep preferences. Our split king mattresses for sale offer the same spacious feel of a king bed with added flexibility, especially when paired with an adjustable base.
Westbourne II Pillow Top
Plush
Innerspring
Adjustable Compatible
Firm
Soft
Starting at
$1,959.99
Westbourne II Plush
Medium
Innerspring
Adjustable Compatible
Firm
Soft
Starting at
$1,859.99
$300 OFF
Continental II Medium
Medium
Hybrid
Adjustable Compatible
Firm
Soft
Starting at
$1,319.99
$1,619.99
$500 OFF
Lansdowne Extra Firm Box Top
Firm
Innerspring
Adjustable Compatible
CoolQuilt
Firm
Soft
Starting at
$2,449.99
$2,949.99
Club Signature IV Pillow Top
Plush
Innerspring
Adjustable Compatible
Firm
Soft
Starting at
$639.99
Club Signature III Luxury Firm
Luxury Firm
Innerspring
Adjustable Compatible
Firm
Soft
Starting at
$639.99
Club Signature III Extra Firm
Extra Firm
Innerspring
Adjustable Compatible
Firm
Soft
Starting at
$639.99
Club Signature II Plush
Medium
Innerspring
Adjustable Compatible
Firm
Soft
Starting at
$539.99
$300 OFF
Continental II Firm
Firm
Hybrid
Adjustable Compatible
Firm
Soft
Starting at
$1,319.99
$1,619.99
60% OFF
Trilliant Ultra Plush Floor Model
Ultra Plush
Hybrid
Adjustable Compatible
Firm
Soft
Starting at
$919.60
$2,299.00
FAQs About Split King Mattresses
What is a Split King mattress?
A Split King mattress is made of two Twin XL mattresses placed side by side. Each Twin XL measures 38" x 80", so together they match the size of a standard King mattress, which is 76" x 80". This setup gives each person their own sleep surface with the same overall space as a King.
How does a Split King mattress work?
Each side of a Split King can move independently—perfect for adjustable bed frames. You and your partner can each choose your preferred firmness or position.
How do you keep Split King mattresses together?
You can use a non-slip mattress connector strap or a fitted King-size mattress pad or sheet set to help hold the two Twin XL mattresses in place.
Are Split King mattresses comfortable?
Yes! They’re just as comfortable as a regular King, with the bonus of custom comfort for each person.
Is a Split King mattress the same as two Twins?
Not exactly. A Split King uses two Twin XL mattresses, which are 5 inches longer than standard Twins. Regular Twin mattresses won’t equal a true King size.