The Lull Mattress Foundation

The box spring reimagined. Ultra sturdy support that’s easy to assemble.

Delivered in 1-4 business days

  • Twin
  • Twin XL
  • Full
  • Queen
  • King
  • Cal King

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APR As Low as 0%
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Pay As Low As


APR As Low as 0%
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Pay As Low As


APR As Low as 0%
Learn More

Pay As Low As


APR As Low as 0%
Learn More

Pay As Low As


APR As Low as 0%
Learn More

Pay As Low As


APR As Low as 0%
Learn More

Premium Mattress Support

The Lull Mattress Foundation is engineered to absorb movement, reduce wear, and create a flat and firm structure for your mattress.

Designed With You in Mind

Crafted from solid wood and wrapped in a luxurious life-proof fabric, the Lull Mattress Foundation is made from quality materials you can count on.


No tools required. The Lull Foundation can be assembled and disassembled in less than five minutes.


The slatted design ensures optimum support & maximum air flow.

Best In Class

The foundation is crafted from solid Southern Yellow Pine and wrapped in luxurious polyester-tweed fabric.

Complete Your Dream Bed

Get the sleep you deserve with the
support you need.

Try it risk-free for 100 nights.

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The Lull Way...

Free Shipping

The Lull Foundation is delivered FREE via FedEx so you can expect it to arrive in 1-4 business days.

100 Night Trial

Try out the Lull Foundation in your home for 100 nights.

Free, Easy Returns

If you don’t love the Lull Foundation, return it during the 100 night trial for a full refund.

3-Year Warranty

Your Lull Foundation is protected by a 3-year limited manufacturer’s warranty.

Foundation Details


37.5” x 74” x 7.5”

54 lbs.

Twin XL

37.5” x 79” x 7.5”

56 lbs.


52.5” x 74” x 7.5”

69 lbs.


59.5” x 79” x 7.5”

75 lbs.


75.5” x 79” x 7.5”

94 lbs.

Cal King

71.5” x 83” x 7.5”

86 lbs.

Box Size

78" x 15.5" x 9"

*Dimensions and Weights are approximate


Frame: Solid Wood
Fabric: 100% Polyester

Shipping Info

FedEx Ground

Shipping Costs

Free Shipping & Returns


3 year

Top Questions

Think of it as a box spring, but without the springs. A mattress foundation is slatted and ensures your mattress is properly supported. It provides a solid surface for your mattress and prevents sagging.

We don't recommend placing the foundation directly on the floor. The Lull Foundation is designed to be used like a box spring and is compatible with most bed frames.

We recommend using the Lull Mattress Foundation with your Lull Mattress. Like a box spring, a mattress foundation raises the mattress making it easier to get in and out of bed. It also absorbs movement, reduces wear, and creates a flat and firm structure for the mattress to rest on.

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That's Changing Lives

Wake up to a better you on
the Lull Mattress
and improve
the way you sleep forever.

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