Rebuild Your Sleep Number Bed

Sleep Number® compatible replacement parts

Rebuild your bed, one page

Pick your bed size, then choose only the parts you need: a new cover, new comfort foam, new foam rails, or all three. Skip anything you want to keep.

1

Your bedPick your mattress size. FlexTop beds have a split at the head so each side can raise on its own.

Standard beds
FlexTop (split head) beds
Not sure if you have a FlexTop?
A FlexTop bed is one mattress that is split down the middle at the head end only (about the top third). The foot end stays joined. It is used on adjustable bases so each sleeper can raise their head separately. If your mattress is one solid piece from head to foot, choose a standard size.
2

New coverThe shell that zips around your mattress and holds everything inside

3

New comfort foamThe foam that sits on top of the air chambers. Add more than one layer if you like.

4

New foam railsThe foam border around the air chambers that gives you edge support

Sleep Number® Bed Repair: Rebuild Your Bed With New Covers, Foam and Rails

If your Sleep Number® bed has developed a dip in the middle, feels softer than it used to, or the cover is worn out, you usually don't need a new bed. The air chambers and pump are the expensive parts, and they often outlast the soft parts around them. This builder lets you replace only the worn parts (the zip-around cover, the comfort foam layer, and the foam border rails) and see your total price as you go, all on one page.

Every part is made to order in the USA by Magic Sleeper, a family-owned mattress company in Pottstown, Pennsylvania that has been in the mattress business since 1979 and has made Sleep Number® compatible replacement parts for over a decade. Shipping is free.

What you can rebuild here

Replacement cover (shell)

The quilted or knit shell that zips around the whole mattress. Choose the Euro Top Shell if your bed has one zipper, the Box Top Cover if it has two zippers, or the Smooth Top Shell for newer (about 2020 and later) models with a smooth, stretchy knit top. Covers are sewn to your size and height with YKK zippers.

Comfort foam layer

The foam that sits on top of the air chambers and gives the bed its feel. Choose medium (closest to the original), firm, soft, gel memory foam, natural latex or egg crate, in 1″ to 4″ heights. Stack up to three layers, or give each side of a Queen or King its own firmness.

Foam rails

The foam border around the air chambers that holds them in place and gives you edge support. Order a complete set (sides, head and foot) or side rails only. Our rails are 2.6 lb density, 85 ILD foam for firmer edges than the originals.

How the Sleep Number® bed builder works

  1. Pick your bed sizeTwin XL, Full, Queen, Expanded Queen, King, California King, RV King, or a FlexTop (split-head) Queen, King or Cal King.
  2. Choose a cover, or skip itMatch your zipper style and measured height. Skip any part you want to keep.
  3. Build your comfort foamPick a foam and height, add layers, or choose two pieces so each sleeper gets their own feel.
  4. Add rails and check outYour parts are added to the cart as separate items, made to order, and shipped free.

Give each side of the bed its own feel

Couples often want different firmness on each side. On a Queen, King or California King you can order a foam layer in two pieces, one for each side. For example, on a King you can choose a Medium Regular Twin XL piece for one side and a Firm Regular Twin XL piece for the other, then add a full-size King gel memory foam layer across the top to blend the two together. Both pieces are made in the same height so the bed stays level.

Which parts do I actually need?

What you notice What usually fixes it
A dip or body impression where you sleep New comfort foam. If the top quilting is also flattened, a new cover too.
You roll toward the edge or the sides sag New foam rails (complete set or side rails).
The cover is torn, stained, or the zipper is broken A new cover in your zipper style and height.
The bed feels too firm or too soft overall A different comfort foam, or an extra layer.
One sleeper wants it firmer than the other A two-piece foam layer with a different foam on each side.

Not sure what is inside your bed? Unzip the cover and look: the foam rails form a frame around the air chambers, and the comfort foam lays across the top of both. If you are still unsure, call us at 610-327-2322 and we will help you figure it out.

How to measure for a replacement cover

Unzip your cover and measure the total height of everything inside it: the foam rails plus the comfort foam on top. That number is the cover height to order. For example, 6″ rails with a 2″ foam layer means an 8″ cover. If you are changing your foam thickness, add the difference to the cover height. Our step-by-step guide has photos: How to measure and order the right size cover.

Repair videos

Replacing your whole cover and/or foam

How to replace your top quilted panel only

Frequently asked questions

Will these parts fit my Sleep Number® bed?
Yes. Our covers, comfort foam and foam rails are made to fit Sleep Number® beds, with sizes including Twin XL, Full, Queen, Expanded Queen, King, California King and RV King, plus FlexTop (split-head) Queen, King and Cal King. Covers are sewn to the height you order. We can also make parts for other air bed brands; call us first so we can confirm the air hose hole placement.
How do I know if I have a Euro Top, Box Top or Smooth Top?
Count the zippers. One zipper that goes all the way around and holds everything is a Euro Top Shell. Two zippers (one around the bottom and one around the top) is a Box Top Cover. If your bed is a newer model with a smooth, stretchy knit top and no quilting, choose the Smooth Top Shell.
Which comfort foam feels most like my original Sleep Number® foam?
Our Medium Regular Foam is the closest to the feel most Sleep Number® beds had when they were new, and it is the safest choice if you are not sure. Firm and Soft Regular Foam make the bed firmer or softer than original. Gel memory foam contours more to your body, and natural latex feels buoyant and responsive.
Can I use a different firmness on each side?
Yes. On a Queen, King or California King, choose "Two pieces, a different foam each side" and select two foams. You will get one piece of each, made in the same height. Many couples add a full-size gel memory foam layer on top to blend the two sides.
Do I have to replace everything at once?
No. Skip any part you want to keep. Many customers only replace the comfort foam, or only the cover. The builder only adds the parts you choose.
How long does it take to ship?
Everything is made to order. You will see an estimated shipping date for each part in your cart before you check out. Foam rails usually ship within a few business days; covers and comfort foam take a little longer because they are made for your order. Shipping is free.
What is your return policy on Sleep Number® parts?
Covers can be returned within 30 days of delivery for a refund (you pay return shipping). For comfort foam, you can either ship it back for a refund or exchange, or keep it and get 50% off a different foam. Only one comfort exchange per customer.
Do you sell Sleep Number® pumps, air chambers or remotes?
No. We make the cover, comfort foam and foam rails. For pumps, air chambers and remotes, please contact Sleep Number directly.
Is repairing a Sleep Number® bed worth it?
If the frame, pump and air chambers still work, replacing the worn soft parts usually costs a few hundred dollars instead of thousands for a new bed. See our full breakdown: Is it worth repairing a Sleep Number bed?

More Sleep Number® repair guides

Questions before you order? We're a family business and we answer the phone. Call 610-327-2322 and we'll help you pick the right parts.

Start your rebuild ↑

Magic Sleeper

Monday-Saturday 10:00 - 6:00
Sunday - Closed

105 E 4th St
Pottstown, PA 19464

610-327-2322

magicsleeper@comcast.net