Split Flex 4-Layer Latex Foam Adult Mattress, 11 Inches, Mattress-in-a-Box, Split Top King Size, Charcoal Knit Cover

You know that feeling when you’re trying to find the perfect mattress, but you and your partner have completely different sleep preferences? It can be a real struggle, especially when one of you prefers a firmer surface while the other likes something softer. This is where the Split Flex 4-Layer Latex Foam Adult Mattress really shines. With its unique split top king size design, it allows each side to cater to your individual needs without compromise. You get the best of both worlds with four layers of supportive latex foam for a personalized sleeping experience. Expect to spend around $1,200, which is reasonable for the premium quality you’re getting.

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At a Glance

Best For: Couples with different sleep preferences needing personalized support.

Key Strengths:

  • Split Top Design Allows separate firmness levels for each sleeper.
  • Latex Foam Layers Provides breathability and long-lasting support.
  • Mattress-in-a-Box Easy setup and transport for hassle-free delivery.

Watch Out For: Slightly heavier than standard mattresses; may require two people to set up.

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Who This Is For

If you and your partner have different sleeping styles, this mattress is a game changer. Couples who prefer distinct firmness levels will find the split top design allows for personalized comfort. You can have a softer feel on one side and a firmer surface on the other without compromising on quality.

Individuals dealing with sleep temperature issues will benefit from the latex foam layers that promote airflow and keep you cool throughout the night. If you’ve struggled with waking up too hot on traditional mattresses, this design could be the solution.

People transitioning to a new mattress will appreciate the convenience of the mattress-in-a-box feature. It’s easy to move into your home and set up, making the entire process much smoother, especially if you’re not keen on heavy lifting.

Key Features

Split Top Design

The unique split top design allows each side of the mattress to be customized for individual comfort preferences. This means you can choose a softer feel on one side and a firmer surface on the other, making it perfect for couples with differing sleep styles. You’ll notice the difference in your sleep quality as you both find the perfect level of support.

Four Layers of Latex Foam

This mattress features four layers of high-quality latex foam that provide excellent support while remaining breathable. The combination of firmness and softness helps to relieve pressure points, ensuring you wake up refreshed and free from aches. You can expect long-lasting durability, which means you won’t need to replace it anytime soon.

Mattress-in-a-Box Convenience

Delivered in a compact box, this mattress is easy to transport and set up in your home. You simply unbox it, let it expand, and you're ready to go. This is especially handy for those living in apartments or homes with narrow staircases, making the setup process much less stressful.

Charcoal Knit Cover

The charcoal knit cover adds a touch of elegance while also helping to keep the mattress fresh. Charcoal has natural moisture-wicking properties, which means it helps to keep your sleeping surface dry and comfortable. This feature is particularly beneficial if you tend to sweat during the night.

CertiPUR-US Certified

This mattress is CertiPUR-US certified, meaning it meets rigorous standards for content, emissions, and durability. You can rest easy knowing that your mattress is made without harmful chemicals and is safe for you and the environment. This adds peace of mind, especially for those sensitive to off-gassing from lower-quality materials.

What It's Like to Use

When you first unbox the mattress, it’s exciting to see how compactly it’s packaged. You’ll lay it out on your bed frame, and within a few hours, it expands to its full 11 inches. The initial scent dissipates quickly, so you won’t have to worry about lingering odors.

As you lie down, you’ll feel the immediate comfort of the latex foam, which conforms to your body while providing solid support. If you’re someone who shifts positions frequently, you’ll appreciate how easy it is to move without feeling stuck. The split design allows you to adjust your side of the mattress to your liking, whether you prefer fluffy pillows or a firmer approach.

Cleaning is straightforward as well. The charcoal knit cover is removable and machine washable, keeping your sleeping environment fresh and inviting. You’ll find that the breathability of the latex keeps you cool, even during those warm summer nights.

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What Stands Out

What to Consider

Common Questions

How long does it take to fully expand after unboxing?

Typically, the mattress will start to expand within a few hours, but it may take up to 48 hours to reach its full 11-inch height. It’s best to let it sit undisturbed during this time for optimal results.

Will this mattress fit a standard king size frame?

Yes, the split top king size mattress will fit a standard king size frame. Just be sure your bed frame is compatible with split designs to fully enjoy the benefits.

Is the cover removable and washable?

Absolutely! The charcoal knit cover is removable and machine washable, making it easy to keep your mattress clean and fresh.

What is the warranty on this mattress?

The mattress typically comes with a 10-year warranty, covering defects in materials and workmanship. This gives you peace of mind about your purchase.

Other Options Worth Considering

If the split top design doesn’t fit your needs, check out the other options in our mattress roundup. We cover traditional memory foam, hybrid designs, and budget-friendly choices that cater to different preferences and price points.


Bottom Line

If you’re a couple looking for a mattress that caters to individual sleep preferences without sacrificing comfort, this one is perfect for you. The split top design and breathable latex foam layers offer a unique solution for personalized support. Expect a restful night’s sleep that really addresses your needs.

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