The short answer

A foam wedge is a cheap strip of foam you push into the gap between two mattresses. It fills the gap for a few weeks, then compresses and sinks. It does not stop your mattresses from sliding apart. You feel a bump where it sits.

The Bedbinder Deluxe is a horizontal mattress connector. It wraps around both mattresses underneath and pulls them tightly together. The gap cannot form. The mattresses cannot slide. You feel nothing. It lasts for years.

Our verdict: The foam wedge is a temporary fix. The Bedbinder is a permanent solution. If you are tired of the gap coming back, the Bedbinder is the better choice.

Bedbinder vs foam wedge: the full comparison

Feature Foam wedge Bedbinder Deluxe
Type Vertical (gap filler) Horizontal (mattress connector)
How it works Foam sits IN the gap Straps wrap UNDER both mattresses
Fills the gap Yes, temporarily Yes, permanently
Stops mattress sliding No Yes
Creates a bump Yes No
Visible under sheets Often Never
Adjustable beds Pops out Stays in place
Durability 2-3 months 5+ years
Price 10-20 euros 49.95 euros
Cost per year 40-80 euros ~10 euros
Sleep trial Rarely 30 days
Rating 3.2 stars average 4.8 stars (15,000+ reviews)

The problem with foam wedges

A foam wedge creating a bump between two mattresses

Most couples try a foam wedge first. It is cheap and available everywhere. But within weeks, the complaints start:

  • The foam compresses and a dip forms in the middle
  • You feel a bump every time you roll over the center
  • The mattresses still slide apart during the night
  • The wedge shifts out of position
  • On adjustable beds, it pops out when you raise the head

A foam wedge treats the symptom (the visible gap) but ignores the cause (the mattresses are not connected). That is why the problem keeps coming back.

The Bedbinder Deluxe creating one smooth surface from two mattresses

How the Bedbinder solves it

The Bedbinder Deluxe takes a different approach. Instead of filling the gap, it eliminates the gap at the source.

  • Wraps around both mattresses and pulls them together
  • The gap physically cannot form
  • Mattresses cannot slide apart
  • Nothing on top of the mattresses, so no bump
  • Works on adjustable beds, boxsprings, and regular beds
  • Lasts for years without losing shape or grip

Installation takes under a minute. Place it over the middle, pull the straps under, click the buckles. Done. Read the full installation guide.

The real cost comparison

A foam wedge looks cheaper at first. But foam compresses and needs replacing every 2-3 months. Over a year, you spend 40-80 euros on foam wedges that keep failing.

The Bedbinder Deluxe costs 49.95 euros once. It lasts for 5+ years. That is about 10 euros per year. And it actually works.

Add in the frustration of waking up in the gap, pushing mattresses back together every morning, and replacing worn-out foam. The Bedbinder pays for itself within the first month.

Frequently asked questions

No. A foam wedge is a gap filler. A real bed bridge like the Bedbinder is a horizontal mattress connector that physically connects the mattresses. The foam wedge fills the gap temporarily. The Bedbinder eliminates the gap permanently.

Foam compresses under body weight. After a few weeks, the wedge loses its shape and sinks into the gap. The Bedbinder does not have this problem because it works underneath the mattresses, not in the gap.

Yes. A foam wedge costs 10-20 euros but needs replacing every few months. The Bedbinder costs 49.95 euros and lasts for years. It also solves the sliding problem that foam wedges cannot fix. Over a year, the Bedbinder is cheaper and far more effective.

Done with foam wedges?

Try the Bedbinder Deluxe for 30 days. If it does not solve your gap problem, you get a full refund.

Free shipping in the Netherlands and Belgium. 15,000+ couples already made the switch.

Order the Bedbinder Deluxe

Learn more: what is a bed bridge | horizontal vs vertical | reviews