Whether you’re looking to upgrade your mattress to something bigger or you’re looking for the best options to accommodate your guests with, you’ve come to the right place.

In this article, we’ll have a look at some of the most popular King Size Futon Mattresses in hopes of finding the best one currently on the market.

Whether it’s an upgrade for yourself or an extra sleeping place for your guests, we want to help you find the best and most suitable King Size Futon Mattress.

What Is a Full Size Futon Mattress?

There are many different mattress types that each serve a different purpose. The easiest way to set mattresses apart from one another is by their size.

A King Size Mattress most commonly refers to a mattress that’s 71 inches wide and 79 inches long, that’s 71×79 inches or 180x200cm

The King Size Mattress is meant for sleeping in pairs and is the biggest option for pair-mattresses.

The queen-size futon mattresses and twin-size futon mattresses are other smaller pair-mattress options you can explore.

The benefits of King Size futon mattresses

Sleeping Space

The best part about king size futon mattresses is the extra sleeping space you get compared to smaller options.

King Size mattresses are usually the largest mattress options you can buy. They’re designed for sleeping in pairs, giving you two sleeping spaces on one mattress.

As with other futon mattresses, you can use the king size mattress as a floor mattress, or you can put it on a bed frame, it’s entirely up to you.

Their size also means that they’re going to take up a lot of room space so before opting for any of the king size mattresses you should take a look at some of the best futon mattresses to see if there might be a mattress size option more suited for you.

Space and Comfort

Regardless of whether or not you’re going to use a bed frame for your King Size Futon Mattress, you’re still going to get the sleeping space and comfort you need.

The notion that futon mattresses are not as good as regular mattresses needs to be dispelled. Futon mattresses can be much more durable and long-lasting than many of the lower end regular spring based mattress.

It’s better to go for a mid-range futon mattress rather than a regular low-end mattress. It does the job just as well if not better.

Affordable versatile and durable

Like we mentioned before, a futon mattress will make for a worthwhile purchase in the long run.

Futon mattresses come at affordable prices, made from durable materials which are well protected and will last you throughout the years and most importantly many of them, the good ones anyway, don’t lose their form. Another great thing about futon mattresses is that they’re very versatile. There are many different ways you can use the King Size Futon mattress. You can use it as a standard bed, like a couch, you can take off the mattress and place it in any room and make it a comfortable sleeping place for your guests and some are even so light that they can be folded and used as camping beds.

Some things to consider before getting a futon mattress

What is it made of?

This goes for all futon mattress types and not just king sized ones. These are some things to consider when buying futon mattresses.

When it comes to futon mattresses, the construction of the mattress along with your personal preferences makes a huge difference in whether or not a mattress will suit you.

The materials play a large part in the function of the mattress:

  • Cotton and foam – Most affordable variety. Due to the fact they are usually very thin, they are only good for sitting and occasional sleeping.
  • Innerspring/Coil  – Strong and durable, innerspring mattresses provide optimal comfort and support. They also breathe very well so you won’t experience extensive overnight heating.
  • Memory foam – Made out of latex and polyester, memory foam perfectly adapts to the sleeper position making it probably the most comfortable material on the list. They are, however, usually very thick and heat up rather quickly.

Personal Preference

Personal preferences are also something that comes into play, when in the market for a mattress.

If you enjoy sleeping on your side, then softer mattresses are more your type. It’s important that your shoulders and hips comfortably sink below, and that the mattress adjusts to your shape, and not the other way around.

On the other hand, if you’re someone who sleeps on your stomach or back, you’ll require something firmer, something that can keep your body in a straight position and provide you adequate neck support.

What is its purpose?

What you use this mattress for is also important.

If you don’t need the extra sleeping space or you’re only looking to use a mattress occasionally or as a guest bed, you can take a look at some of the best full-size futon mattresses available.

If you’re looking for a mattress to use on a nightly basis, or need a mattress for the extra sleeping space, then you’re looking for a king size mattress.

Four Best King Size Futon Mattresses

1. EMOOR Japanese Traditional Futon Mattress

When it comes to King Size Futon Mattresses, the EMOOR Traditional Futon Mattress “Classe” is the one true king.

The Emoor Futon Mattress Classe is the perfect mattress for a comfortable night’s worth of sleep. This mattress is 3 inches thick, and the material used for the outer fabrics of this mattress is 100% high-quality cotton.

You might think that a 3-inch thick mattress won’t be the most comfortable mattress to sleep on so you might opt for something more thicker, but the reality is a thicker mattress can also heat up quite a bit and leave you feeling sweaty and exhausted when you wake up.

The dimensions of it are standard King Size Futon Mattress dimensions, at 71×79 inches or 180×200 centimeters. It’s a bit heavier than some mattresses of this size; it is also far superior to most.

The filling is 100% antibacterial polyester, which is good for durability and mold resistance.

It’s not too heavy for a mattress of this category. It’s an easy to carry, easy to store and easy to fold mattress, making it a very versatile king-sized mattress.All in all, it’s a comfortable futon mattress that can be used as your main sleeping place or as a guest bed that’s sure to leave any guests with a good night’s rest.


  • Comfortable for nightly sleep
  • Can be used as a guest bed
  • Easy to carry and store
  • Made with high-quality materials


  • If you don’t enjoy sleeping on the floor, you might need a frame.

2. ColorfulMart Grey Flannel Japanese Floor Futton Mattress

If you’re looking for an affordable King-Sized Mattress, you can’t go wrong with ColorfulMart’s Grey Flannel Japanese Floor Futton Mattress. Simply put it’s very reliable and very cheap.

The size of this futon mattress is the same as most other king-sized mattresses, 71x79in or 180x200cm. Despite the low price, the materials used for this mattress are quite decent. The top layer consists of pure flannel while the bottom layer is 100% polyester fiber.

The main problem with this futon mattress is that, unless you prefer sleeping on a hard surface, it’s too thin.

The filling is microfiber which makes it almost impossible to sleep on it without an additional supporting mattress. It’s not meant to function as a primary mattress.

The mattress can also be rolled up and tucked away, taking very little space when unused.

This futon mattress is more than you’d expect for a king-sized mattress that costs under $100. It’s a cheap mattress that offers decent quality.

It’s great for those who enjoy sleeping on harder surfaces or as a secondary mattress, like a guest bed; something you would use occasionally.


  • Very affordable
  • Decent quality
  • Easy to roll up and store
  • Durable


  • Hard to maintain
  • Too thin for a primary mattress

3. Lovehouse Sleeping Tatami Floor Mat

The Lovehouse Sleeping Tatami Floor Mat makes for a decent portable mattress, but not that great of a sleeping mattress.

The Lovehouse Tatami Floor Mat is a standard 71x79in(180x200cm) King-Sized mattress. However, it is around 3 inches thick and is more suited as a portable cushion or a  guest bed; unfortunately, it’s too thin to be used as a primary sleeping bed.

The main material in this mattress is polyester fiber; it’s easily foldable has moisture absorption and decent ventilation.

The Lovehouse Tatami Floor Mat weighs at around 13lbs which makes it relatively light for a mattress in its category. It makes for a decent camping mattress due to how light it is; you can just fold it and carry it around wherever you go.

The quality of the materials used in this mattress are also decent; it’s quite durable and wear-resistant. However, a huge issue with this mattress is that it’s not thick enough to be used for regular sleep.

If you’re looking for a king-sized mattress to sleep on every night, you should look for other options.With that being said, this mattress works great as a portable cushion, a camping mattress or an occasional guest bed, but we don’t recommend using it as your main mattress.


  • Decent quality
  • Easy to carry, easy to fold
  • Good ventilation


  • Too Thin

4. BioPEDIC Classic 233-Thread Count Fiberbed

The BioPEDIC Classic is less of a futon mattress and more of a mattress topper due to how thin it is. This mattress is too thin to be used as a guest bed for a single night’s worth of sleep, it’s virtually the same as sleeping on the ground.

The dimensions for this king-sized mattress are a bit different than the rest in this category.

It comes in at 78x80in(198x203cm). The cover 100% cotton and the filling is polyester fiber and weighs around 12lbs.

Another issue with this mattress is that the filling is sometimes unevenly distributed, so even if you were to use this mattress as a topper, it could still cause discomfort.

There’s really not much to this mattress, the only thing that it has going for it is its low price.

It’s an overall thin and somewhat poorly designed mattress, and we don’t recommend using it as anything other than a mattress topper.


  • Very Cheap


  • More of a topper than a mattress
  • Filling can be uneven

Final Thoughts

Without a doubt, the single best King Size Futon Mattress is the EMOOR Japanese Traditional Futon Mattress Classe. It’s a perfect combination of price, quality, and versatility.

You can use it as your main bed or as a guest bed, with a frame or without one. It’s relatively light, and you can easily fold it and tuck it away, without it taking too much space.

The comfort this mattress offers is second to none, rivaled only by the quality of its materials.

There’s no King-Size Futon Mattress currently available that we would recommend more than the EMOOR Japanese Futon Mattress Classe.

If you’re looking for something that’s more of a complete package, you can check out some of the best and most affordable futons.