A king size bed uses one large mattress. In the US, that is 76 x 80 inches (193 x 203 cm). One mattress, one surface, no gap.

A split king bed uses two twin XL mattresses side by side. Each one is 38 x 80 inches (97 x 203 cm). Together they equal the same total size as a king. But there are two separate mattresses with a gap in the middle.

Both give you the same amount of sleeping space. The difference is what happens in the center.

Pros:

• One smooth, seamless sleeping surface
• No gap in the middle
• Standard king sheets fit perfectly
• Great for couples who like to cuddle

Cons:

• Both partners share the same firmness level
• Adjustable bases move the entire mattress together
• Heavy and hard to move through doorways and stairs
• You feel every movement your partner makes

Pros:

• Each partner chooses their own firmness
• Independent adjustable base positions
• Minimal motion transfer between sides
• Easier to move and deliver (two smaller pieces)

Cons:

• Gap in the middle between the mattresses
• Mattresses can slide apart over time
• Harder to find sheets that fit properly
• Less ideal for cuddling in the center

What if you could have the individual control of a split king and the seamless surface of a king? You can. That is exactly what the Bedbinder Deluxe does.

The Bedbinder connects both split king mattresses so they feel like one surface. The gap disappears. The mattresses cannot slide apart. But each side still has its own firmness. Each side still adjusts independently on the adjustable base.

You keep every advantage of the split king and eliminate its only weakness. It is the best of both worlds.