A zippered RV mattress cover can protect the entire mattress from spills, moisture, dust, and other unwanted debris. For a 30-by-75-inch bunk, the Kingnex and Four Seasons Essentials encasements are relevant options; for a short queen, compare the Kingnex and Four Seasons short-queen covers. FoammaUSA is different: it pairs a custom foam mattress or topper with a water-resistant zippered cover, making it a fit for buyers replacing or building a sleep surface.
| Product | Best suited for | Key distinction |
|---|---|---|
| Kingnex RV Bunk Protector | 30-by-75-inch bunk owners | Waterproof, soft-feeling six-sided enclosure |
| Four Seasons RV Bunk Encasement | 30-by-75-inch bunks, 5–8 inches thick | Waterproof lining and sealed zipper |
| Kingnex Short Queen Protector | Short-queen mattress owners | Waterproof six-sided protection |
| FoammaUSA Custom Mattress | Custom-size mattress projects | Foam and water-resistant cover options |
| Four Seasons Short Queen Encasement | Short-queen owners seeking a sealed cover | Waterproof lining and hypoallergenic construction |
Kingnex Waterproof RV Bunk Protector
This Kingnex encasement is sized for a 30-by-75-inch RV bunk. It fully covers all six sides and uses a fine-tooth zipper to seal the mattress. The listed features describe it as waterproof and say its smooth knitted polyester surface is designed to feel soft and quiet.
Best for: RV owners who want a waterproof, fully enclosed cover for a bunk with matching dimensions. Its six-sided design is a reason to choose it over a cover that only protects the top and sides. Check first: The supplied product details do not specify mattress depth, so confirm the fit before ordering.
Four Seasons Essentials RV Bunk Encasement
This cover is listed for a 30-by-75-inch bunk mattress that is 5 to 8 inches thick. Its six-sided enclosure has a zipper with a Velcro seal. A polyurethane inner lining blocks liquids and moisture, while the product description also highlights protection from dust and pet hair.
Best for: Buyers whose bunk matches both the listed footprint and thickness, especially those prioritizing a waterproof lining and sealed zipper. Choose it over the Kingnex option if the 5-to-8-inch depth range matches your mattress. Check first: A mattress outside that thickness range may not fit as intended.
Kingnex Waterproof Short Queen Protector
Designed for an RV short-queen mattress, this Kingnex protector fully encases the mattress on all six sides. Its fine-tooth zipper is intended to close the enclosure, and the listed features describe a waterproof barrier and a smooth, quiet knitted polyester surface.
Best for: Short-queen owners who want an all-around waterproof cover with a soft-feeling surface. It is a straightforward alternative to the Four Seasons short-queen option when a quiet knitted polyester surface is a priority. Check first: The product details provided do not state mattress depth, so verify the cover’s fit for your particular mattress.
FoammaUSA Custom Foam Mattress And Cover
This is a customizable foam mattress or topper, not simply a fitted encasement for an existing mattress. Listed dimensions range from 18 to 84 inches wide, 48 to 96 inches long, and 2 to 12 inches thick, in one-inch increments. Buyers can select foam firmness and a quilted or navy water-resistant zippered cover, with optional gel memory foam.
Best for: RV owners building a custom sleep surface or replacing foam in a nonstandard bed space. It offers more sizing flexibility than the fixed-size covers above. Limitation: The cover is described as water-resistant, not waterproof, and slight size discrepancies of 0.25 to 3 inches may occur. The foam may take up to 72 hours to expand after unpacking.
Four Seasons Short Queen Encasement
Four Seasons lists this zippered encasement for a 60-by-75-inch short-queen mattress. It covers all six sides and includes a Velcro zipper seal. The product features describe a waterproof polyurethane inner lining and hypoallergenic construction intended to help shield the mattress from dust and pet hair.
Best for: Short-queen owners seeking a fully enclosed, waterproof cover with a stated focus on allergens and debris. Compare it with the Kingnex short-queen option if those protection priorities matter more than the Kingnex’s described knitted surface. Check first: The supplied details do not specify mattress thickness.
Buying Guide: How To Choose An RV Mattress Cover
What size and depth should you measure?
Measure the mattress width, length, and depth before choosing a cover. RV beds may use bunk or short-queen dimensions that differ from other mattress sizes. Match the measurements to the product listing rather than relying only on the bed’s name. Among these options, the Four Seasons bunk cover specifies a 5-to-8-inch thickness range; the supplied details for the other encasements do not list depth.
Is waterproof protection necessary?
Choose a product described as waterproof if blocking spills and moisture is a priority. The Kingnex and Four Seasons encasements are listed as waterproof. FoammaUSA describes its optional zippered cover as water-resistant, which is a different claim and should not be treated as equivalent to waterproofing.
Why choose a six-sided zippered encasement?
A six-sided cover encloses the top, bottom, and sides of the mattress, unlike a basic top-only protector. A zipper closes the enclosure, and the Four Seasons listings also specify a Velcro zipper seal. Consider whether the cover’s zipper and full enclosure match your protection needs.
Should you choose a cover or a custom mattress?
Choose a fixed-size encasement to protect an existing mattress when its dimensions match. Choose the FoammaUSA product if you need custom foam dimensions, firmness options, or a new mattress or topper. Its cover is water-resistant, and the listing notes that minor size differences may occur.
Frequently Asked Questions
What does a zippered mattress encasement cover?
A six-sided encasement covers the mattress top, bottom, and sides, then closes with a zipper. The exact zipper-seal details vary by product.
Are all the covers in this list waterproof?
No. The Kingnex and Four Seasons encasements are described as waterproof. The FoammaUSA cover is described as water-resistant.
How do I know whether an RV bunk cover will fit?
Compare the mattress width, length, and thickness with the cover’s listed measurements. For the Four Seasons bunk option, the stated fit is 30 by 75 inches and 5 to 8 inches thick.
Can a mattress encasement help keep out dust and pet hair?
The Four Seasons listings describe their fully enclosed covers as barriers against dust and pet hair. Protection depends on a suitable fit and properly closed zipper.
Is the FoammaUSA product only a mattress cover?
No. It is a customizable foam mattress or topper with cover options, including a water-resistant zippered cover.