Replace Your Worn RV Bunk Mattress with a Custom Fit

Replace the bunk mattress nobody wants to sleep on

A flat, stained or musty RV bunk can make the whole camper feel older. Replace it with a fresh mattress built for the space you actually have—not the closest stock size you can find.

RV bunks are rarely standard. One corner may meet a cabinet, the wall may curve, and the upper and lower bunks may not even be the same size. That is why replacing an old bunk mattress can be frustrating: a household twin is usually wrong, while an off-the-shelf RV pad may still leave gaps or bind against the cabinetry.

The RV Basics Custom Bunk Builder lets an RV owner or service technician enter the finished measurements, choose the thickness and build square, angled, rounded or rectangular-notched corners. Order a complete mattress with its removable cover, or order a made-to-fit cover for a mattress that is still worth keeping.

Make an older camper feel cleaner and more comfortable

You do not have to rebuild the bunk room to make a noticeable upgrade. Replacing a sagging, stained or poorly fitting mattress removes one of the most tired-looking parts of the interior and gives the sleeping area a clean starting point. The soft sandy-greige cover is neutral enough to work with the wood tones and lighter finishes found in many RVs.

In a used camper, you can keep the floorplan you like without sleeping on the mattress you inherited. In a family RV, you can replace the bunk that has absorbed years of camping trips. In a service bay, you can offer the customer a finished replacement instead of sending them home to hunt for a size that may not exist.

If the existing mattress is still clean, supportive and in good condition, choose Cover Only. It refreshes the exterior without paying for a new mattress core. A new cover will not repair flattened cushioning or solve moisture, mildew or odor problems inside an old mattress.

Custom dimensions for the shapes RV makers actually use

The builder accepts finished widths from 18 to 60 inches and lengths from 48 to 80 inches, in whole-inch increments. Make each corner square, angled, rounded or a rectangular notch measured by width and depth while watching the preview update.

Measure the bunk platform and check the existing mattress before entering the finished size. Measure each bunk separately—even in the same camper. Double-check which end and corner you are looking at so a left-hand detail does not become a right-hand surprise.

Upgrade the thin factory pad adults dread

Adults use RV bunks too, and a thin, tired pad can turn an otherwise useful bed into wasted space. With 4-, 6-, 8- and 10-inch choices, you can replace like for like or consider a thicker build for a more substantial sleeping surface. That can make the bunk more useful for an older child, an adult guest or anyone staying more than a night.

Thickness alone does not establish firmness, support, weight capacity or comfort for a particular sleeper. Choose the thickness that fits the available clearance and the way the bunk will be used, then confirm the finished dimensions in the builder before ordering.

Wash the cover. Keep the adventure.

Dusty campground feet, snack crumbs and another busy weekend are part of RV life. A fully removable zippered cover makes routine care simpler: take off the cover and machine-wash it according to the supplied care instructions.

The washable component is the cover, not the mattress core. Follow the product's care label for washing and drying; do not assume a hot cycle or tumble drying is appropriate. Let everything dry fully before reassembling your bunk.

Why choose a custom bunk instead of another stock Teddy Bear pad?

A matching Lippert Teddy Bear replacement can make sense when the listed size already fits. RV Basics is the better path when the old bunk is an odd size, the factory pad feels too thin, or you want a fully removable cover that is easier to wash.

*Source: Lippert Teddy Bear cover listing, SKU 2021130638, checked September 3, 2026. This comparison concerns that published retail cover range, not Lippert's full OEM catalog. Lippert also lists model-specific angled and radiused covers.

Care instructions can differ by product. etrailer's guidance for a Teddy Bear mattress describes machine-washable replacement covers, so always follow the label supplied with the specific cover you own.

The practical difference: RV Basics lets you solve fit, thickness and cleanability together. If a stock replacement already matches the bunk and meets your needs, it may be enough. If it does not, you no longer have to force the camper around the mattress.

Your measurements go straight to the people building it

When you finish the builder, your selections become a dimensioned production sheet. It identifies whether you ordered a complete mattress with cover or a cover only, then records the size, thickness and corner details for manufacturing.

That matters to owners and technicians alike. The production team receives the actual build information instead of a vague note attached to a generic mattress order, helping keep the part you measured and the part being made aligned.

Each bunk is made to order in Wakarusa, Indiana, in the heart of northern Indiana Amish and RV manufacturing country. The production team builds from the dimensioned sheet created by the final customer selections—not from a generic stock-size description.

The result is a straightforward path from the bunk in front of you to real RV-industry manufacturing: measure it, configure it, review it and send the exact build forward.

How to order one bunk—or several different ones

1. Choose the build. Select Mattress + Cover for a complete replacement, or Cover Only to keep your existing core.
2. Measure and configure. Enter the finished size, thickness and corner details. Review the preview carefully.
3. Add that bunk to your cart. For different sizes, design and add each bunk separately. Use quantity only for identical builds.
4. Review before checkout. Use “Edit this bunk” in the cart if something needs changing. Review the updated design before completing your purchase.

RV make, model and an optional project name help give the build context. They do not replace your measurements: floor plans and bunk dimensions can vary.

Made to order, available to RV owners in the USA and Canada

Elkhart RV Parts ships to the USA and Canada, subject to product and destination restrictions. Your bunk is made to order rather than taken from a ready-to-ship stock pile; check the current lead-time estimate on the product page and allow for transit.

Use a complete physical delivery address where you can receive the package throughout the fulfillment period. If you are moving between campgrounds, arrange a dependable delivery location before ordering. See our shipping policy for destination details.

Common questions before you replace an RV bunk mattress

Can I order just a washable cover?

Yes. Choose Cover Only and enter the dimensions and thickness of the mattress you will keep. This option does not include a mattress core.

Can two bunks in one order have different sizes?

Yes. Build each unique bunk separately and add each to the cart. Give them names such as “Upper bunk” and “Lower bunk” to make review easier.

Will a 10-inch mattress work on an upper bunk?

Not necessarily. Check the RV manufacturer's maximum mattress thickness, guardrails and headroom first. A listed builder option is not approval for every bunk installation.

What irregular shapes can I build online?

Each corner can be square, angled, rounded or a rectangular notch measured by width and depth. The live preview and production sheet reflect every corner selection.

Does the material preview show the exact final color?

Screens and lighting can shift how a fabric looks. Use the preview to understand the finished style and use the named Richloom Bunkhouse Dune material as the product specification.