How to fix the gap in your Sleep Number split king
Love your Sleep Number bed but hate the gap in the middle? Here is how to close it without losing individual adjustability.

Sleep Number split king beds are popular for good reason. Each side adjusts independently. You pick your firmness. Your partner picks theirs. But there is one big drawback: the gap in the middle.
Two separate mattresses always create a gap. On a Sleep Number, this gap is especially frustrating because the mattresses sit on an adjustable base. They shift when you change positions. The gap gets wider over time.
Foam wedges do not work well here. When you raise the head or foot section, the foam pops out. It was designed for flat beds, not adjustable ones.
A foam wedge is a vertical gap filler. It sits in the crack between the mattresses. It works okay on a flat, static bed. But Sleep Number beds are neither flat nor static.
The foam wedge fills the gap from above. But on an adjustable bed, the gap changes shape constantly. A rigid piece of foam simply cannot keep up.
The Bedbinder Deluxe is a horizontal bed bridge. It wraps around both mattresses and pulls them together from underneath. The gap cannot form because the mattresses are physically connected.
Here is why it works so well on Sleep Number beds:
The Bedbinder works underneath the mattresses. It does not care what firmness setting you use. It does not care what angle the base is at. It just keeps both mattresses locked together.
The biggest concern with any gap filler on a Sleep Number bed is losing the adjustability that makes it special. The Bedbinder does not take any of that away.
Your Sleep Number setting stays the same. One side can be at 35, the other at 75. The Bedbinder does not affect the air chambers at all.
Your FlexFit base still works perfectly. Raise the head for reading. Raise the feet for better circulation. The Bedbinder flexes right along with the mattress. Both sides adjust independently, just as before.
The only difference? No more gap. No more rolling into the middle. No more mattresses drifting apart during the night.
Yes. The Bedbinder wraps around both Sleep Number mattresses and pulls them together. It does not interfere with the air chambers or individual firmness settings. Each side still adjusts independently.
A foam wedge fills the gap temporarily, but it pops out when you adjust the head or foot of the bed. It also does not stop the mattresses from sliding apart. For adjustable beds like Sleep Number, a horizontal bed bridge is the better choice.
Yes. The Bedbinder is designed to work with adjustable bases. It flexes with the mattress when you raise the head or foot section. Both sides can be adjusted independently while the mattresses stay connected.
The Bedbinder Deluxe connects both mattresses while keeping full adjustability. Try it for 30 days risk-free.
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