The best waterproof futon cover depends on whether you need to protect a sleeping mattress or a futon sofa. For a full-size mattress, a zippered encasement offers six-sided coverage; for a sofa bed, a stretch cover fits over the upholstery and is easier to remove. The picks below include two full-size mattress encasements and two fitted futon sofa covers. A Japanese floor futon is included as a bedding alternative, not as a waterproof cover.
| Product | Best suited for | Style |
|---|---|---|
| Four Seasons Essentials Full Encasement | Full futon mattress protection | Zippered encasement |
| Easy-Going Waterproof Futon Cover | Medium sofa-style futons | Stretch slipcover |
| Four Seasons Essentials 8–11-Inch Encasement | Full mattresses with specified depth | Zippered encasement |
| MAXIJIN Waterproof Futon Cover | Full-size armless sofa beds | Washable slipcover |
| ZonLi Japanese Floor Futon | People seeking a portable floor mattress | Mattress, not a cover |
Four Seasons Essentials Full Zippered Encasement
Best for: A full-size futon mattress that needs protection on every side. This encasement is sized for a 54-by-75-inch futon and closes with a zipper and Velcro seal. Its polyurethane inner lining is described as waterproof and designed to block spills and moisture.
The six-sided design is the key distinction from a fitted sofa cover: it surrounds the mattress rather than covering only its top and sides. That makes it a useful choice for households looking to protect the mattress itself from liquid exposure, dust, and allergens.
Limitation: Confirm that your mattress measures 54 by 75 inches and check its depth before ordering; the listed product information does not specify a depth range.
Easy-Going Waterproof Stretch Futon Cover
Best for: A medium futon sofa that needs a fitted cover rather than a mattress encasement. Easy-Going lists a seat-width fit of 65 to 70 inches. The cover combines polyester and spandex, has a waterproof treatment on the top fabric, and uses a PE-film backing for an additional liquid barrier.
Its elastic bottom is intended to help the cover fit around the sofa and protect against stains, spills, and everyday wear. Choose this option if your priority is covering a futon used as seating and you can match the seat width to the stated range.
Limitation: Measure the sofa before buying. The listed fit is for a 65-to-70-inch seat width, so it may not suit smaller or larger futons.
Four Seasons Essentials 8–11-Inch Encasement
Best for: A full futon mattress measuring 54 by 75 inches with a depth between 8 and 11 inches. Like the other Four Seasons Essentials option, it has a six-sided zippered design, a Velcro zipper seal, and a polyurethane inner lining intended to block liquids and moisture.
The specified depth range makes this version easier to compare with a mattress whose thickness is known. It is a better fit when you want full mattress coverage and have verified both the length and width as well as the 8-to-11-inch depth.
Limitation: Avoid choosing it if your mattress depth falls outside the listed range; the fit may not be appropriate.
MAXIJIN Waterproof Full Futon Sofa Cover
Best for: A full-size armless futon sofa bed with a width in the stated 67-to-82-inch range. The cover has a jacquard polyester-spandex surface, a built-in TPU waterproof layer, and an elastic bottom intended to help keep it in place. The fabric is described as machine washable separately in cold water, with low tumble drying.
Choose this if you want a sofa-style cover with a patterned appearance and a stated care routine. It is designed to protect against spills, crumbs, pet hair, and dirt while updating the look of an armless futon.
Limitation: Check the futon’s dimensions and shape. This cover is specified for armless sofa beds, not every futon design.
ZonLi Japanese Floor Futon Mattress
Best for: Shoppers considering portable floor bedding instead of a mattress protector. This 80-by-60-inch, 2.5-inch-thick Japanese-style futon is described as foldable and rollable, with a five-layer structure and a 100% cotton outer layer. Tufted accents help hold its filling and surface fabric in place.
This product is included as an alternative for buyers comparing futon bedding options. It is a mattress, not a waterproof cover, and its listed features do not describe a waterproof barrier.
Limitation: Do not choose it when your main requirement is protecting an existing mattress from spills or moisture.
Buying Guide: How To Choose A Waterproof Futon Cover
Do you need a mattress encasement or a sofa slipcover?
Choose a zippered encasement when the item being protected is a standalone mattress. A six-sided design wraps around the mattress, while the listed slipcovers fit over futon sofas. Sofa covers are better suited to seating, upholstery, and visible fabric protection; they are not the same style of full mattress enclosure.
What measurements should you check?
Measure the futon before ordering. For mattress encasements, compare length, width, and depth with the product specifications. The Four Seasons Essentials options are listed for 54-by-75-inch full futons, and one specifically states an 8-to-11-inch depth. For sofa covers, compare seat or sofa width with the stated fit range and verify whether the cover is intended for an armless design.
Which waterproof details matter?
Look for the barrier described in the product information. The mattress encasements list a polyurethane inner lining, while the Easy-Going cover describes a waterproof-treated top and PE-film backing. MAXIJIN lists a built-in TPU layer. These construction details help distinguish the products, but the fit and coverage style also matter.
How should you compare care and everyday use?
Check care instructions before choosing a cover. MAXIJIN lists separate cold-water machine washing and low tumble drying. The other supplied product details do not specify equivalent care instructions, so consult the current product listing for cleaning guidance. For a frequently used sofa, fit and staying in place may be important; for a mattress, a secure zipper and correct depth are central considerations.
Frequently Asked Questions
Can I use a futon sofa cover on a futon mattress?
Not necessarily. Sofa slipcovers are sized for futon seating and upholstery, while mattress encasements are sized by mattress dimensions. Match the product type to the item you need to protect.
Which listed cover fully surrounds a futon mattress?
The Four Seasons Essentials zippered encasements are described as six-sided covers that close around the mattress with a zipper and Velcro seal.
How do I choose between the two Four Seasons encasements?
Both are listed for a 54-by-75-inch full futon. One specifies an 8-to-11-inch mattress depth, so compare that range with your mattress thickness before selecting it.
Is the ZonLi product a waterproof mattress protector?
No. It is a foldable Japanese floor futon mattress. The provided product features do not describe it as waterproof or as a cover for another mattress.
Should I measure a futon before buying a cover?
Yes. Compare the futon’s dimensions with the listed size range, including mattress depth for an encasement or seat width for a sofa cover.