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Sofa beds have become much more than occasional guest furniture. Today, many homeowners use sleeper sofas in home offices, basements, condos and even sunrooms as an everyday multifunctional living solution.

Whether you need a compact sleeper chair for a smaller room or a queen sleeper sofa for overnight guests, the mattress inside your sofa bed can make a major difference in comfort.

According to Magaly del Castillo, Interior Designer at La-Z-Boy Cyrville, more customers are paying attention to sofa bed comfort than ever before.

“There has been an upward trend in people sleeping in their sofa beds during the summer when the weather is nice,” Magaly explains. “Some people have even chosen to place their sofa beds in their home offices or sunrooms.”

However, not all sleeper mattresses feel the same. Mattress construction, firmness level and support all impact how comfortable a sofa bed will feel over time.

In this article, we will compare each mattress option, explain the differences in comfort and support and help you decide which La-Z-Boy sofa bed mattress may work best for your home.

Key Takeaways

• La-Z-Boy offers three sofa bed mattress options with different firmness levels and comfort features.
• The Supreme Comfort Mattress is the standard option and provides medium-firm innerspring support.
• The Slumber Air Mattress offers adjustable firmness via an inflatable air-cushion system.
• The Firm Mattress uses high-resiliency memory foam for enhanced support and pressure relief.
• La-Z-Boy sleeper sofas are available in Twin, Full, and Queen mattress sizes, depending on the selected furniture frame.
• Sleeper sofa pricing depends on both mattress selection and overall furniture size.

In This Article…

1. Sofa Bed Mattress Selection at La-Z-Boy
2. La-Z-Boy Sofa Bed Sizes & Dimensions
3. La-Z-Boy Sofa Bed Cost & Upgrades
4. La-Z-Boy Sofa Bed Warranty Coverage
5. Which La-Z-Boy Sofa Bed Mattress is Right for You?

Sofa Bed Mattress Selection at La-Z-Boy

All La-Z-Boy sofa beds are customizable, allowing customers to choose a mattress option that best matches their comfort preferences and sleeping needs.

While La-Z-Boy does not manufacture mattresses directly, it sources high-quality options from trusted manufacturers to ensure durability and long-term comfort.

Here is a closer look at each available mattress option.

1. Supreme Comfort Mattress

The Supreme Comfort Mattress is the standard mattress included with every La-Z-Boy sleeper sofa unless an upgrade is selected.

This mattress features a 5.5-inch quilted innerspring system designed to provide medium-firm support. The innerspring construction helps distribute body weight evenly while reducing pressure points during sleep.

For many homeowners, the Supreme Comfort Mattress is an affordable option for occasional overnight guests.

Because of its balanced firmness level, it appeals to sleepers who prefer a more traditional mattress feel without excessive softness.

Best For:

• Occasional overnight guests
• Budget-conscious shoppers
• Traditional mattress feel
• Medium-firm support preferences

2. Slumber Air Mattress

The Slumber Air Mattress is an upgraded sleeper mattress option designed for adjustable comfort.

This mattress combines a 4-inch innerspring base with an inflatable air cushion system that can expand up to 6 inches when fully inflated.

One of the biggest advantages of the Slumber Air Mattress is its customizable firmness level. Users can inflate or deflate the mattress depending on their preferred comfort level.

Magaly explains that the adjustment system is easy to use. “The access for the pump can be easily located on the top right of the mattress, and it also has a cover, so you don’t feel it when you sleep,” she says.

Because firmness can be adjusted, the Slumber Air Mattress works well for households with guests who have different comfort preferences.

Best For:

• Adjustable firmness preferences
• Frequent overnight guests
• Flexible comfort levels
• Customers want customizable support

3. Firm Mattress

The Firm Mattress is the newest sleeper mattress option available at La-Z-Boy.

Unlike the innerspring options, this mattress uses a high-resiliency memory foam construction designed to provide enhanced support and pressure relief.

Memory foam helps distribute weight more evenly while minimizing motion transfer, which can help create a more stable sleep experience.

The foam construction also helps the mattress maintain its shape over time, improving durability compared to some traditional innerspring systems.

Magaly describes the sleeping experience as “like lying down on a cloud.” Because of its supportive design, the Firm Mattress is often recommended for customers who prioritize long-term comfort and pressure relief.

Best For:

• Extra support and pressure relief
• Frequent sleeper sofa use
• Memory foam comfort preferences
• Reduced motion transfer

La-Z-Boy Sofa Bed Sizes & Dimensions

The size and shape of your sofa bed mattress depend on the sofa bed that you select. At La-Z-Boy, we have 3 sofa bed sizes, each corresponding to a specific mattress size.

The best way to determine which size is right for you is by measuring your space.

Twin Sleeper Chair

A Twin Sleeper Chair is the smallest sleeper option with the smallest pull-out mattress. As the name suggests, a Twin Sleeper Chair is a chair that pulls out into a twin-sized bed that sleeps one person.

Magaly also says you may be able to squeeze in one adult and a small child if you want to, but it is better suited to one person.

The specific size of the twin sleeper chair depends on the specific furniture frame. Still, Magaly says the average width of a twin sleeper chair is 39 inches. The twin-sized mattress has the following dimensions:

Full Sleeper Sofa

Full Sleeper Sofas are much bigger than twin sleeper chairs because they can fit two people instead of one. This furniture item is right for you if you want something to sleep two people in a smaller space.

Magaly says the average width of a full sleeper sofa is 54 inches. These sleeper sofas feature a full-sized mattress with the following dimensions:

Queen Sleeper Sofa

“Although there is room for two people on the full-sized mattress,” Magaly mentions, “you might feel a little snug if you move around too much in your sleep.”

If that’s the case, you might feel more comfortable sleeping on the Queen Sleeper Sofa. This is the largest mattress size La-Z-Boy offers.

Magaly says the average width of a queen sleeper sofa is 60 inches. The queen mattress has the following dimensions:

Sectional Modular Options

Along with our sleeper sofa options at La-Z-Boy, customers can add any of our mattress selections onto a sectional.

It is important to note that sleeper sofa modular pieces are not offered with every sectional at La-Z-Boy, only a select few. Furthermore, the mattress size will depend on the modular sectional pieces.

Cost of a Sleeper Mattress at La-Z-Boy

In terms of cost, Magaly states that a La-Z-Boy sleeper sofa is considered an upgrade and will “always be more expensive than a regular sofa.”

With that being said, two main factors will indicate the cost of a sleeper sofa at La-Z-Boy: the size of the frame and the type of mattress.

Generally speaking, the larger the frame, the more expensive your sofa bed will be.

Next, the cost of your sleeper sofa will depend on the mattress you select. Each sofa bed mattress option comes at a different cost, which is added to the overall price of the furniture item:

Mattress Upgrade Costs

*All La-Z-Boy prices listed in this article are subject to change. We aim to update all cost-related articles twice per year. This article was last updated on May 28th, 2026. Contact your local Ottawa, Gatineau or Kingston location by phone or in person for up-to-date pricing.

If you want to learn more about the Cost of a Sofa Bed, take a look at this article.

La-Z-Boy Sofa Mattress Warranty Coverage & Financing

Each sleeper furniture product is covered by La-Z-Boy’s Limited Lifetime Warranty, including the mattress. This warranty covers any noticeable defects or physical flaws that cause the foam materials in the mattress to split in half.

For full details of the Limited Lifetime Warranty, check out this full La-Z-Boy warranty breakdown.

While still quality-crafted, other aspects of the product, such as fabrics, leather, cushion, and mattress, are not meant to last a lifetime. However, these parts are still covered by the La-Z-Boy Manufacturer’s Warranty for a given time.

To further protect your purchase, La-Z-Boy Ottawa, Gatineau and Kingston offer an extended warranty plan at an additional cost. To learn more about the Extended Warranty Plan and if it’s right for you, take a look at this article.

La-Z-Boy also offers furniture financing options for those who may not have the full amount right away. To learn more about La-Z-Boy’s Furniture Financing, take a look at this article.

Which La-Z-Boy Sofa Bed Mattress is Right for You?

Choosing the right La-Z-Boy sofa bed mattress depends on your comfort preferences, available space and how frequently the sleeper sofa will be used.

The Supreme Comfort Mattress is the best option for shoppers seeking a more affordable, traditional guest mattress.

The Slumber Air Mattress works well for customers who want greater firmness flexibility and personalized comfort adjustments.

Meanwhile, the Firm Mattress is ideal for shoppers who prioritize memory foam support, pressure relief and long-term durability.

Mattress size also plays an important role. Twin sleepers work well in smaller rooms, while Full and Queen sleeper sofas are better suited for larger spaces or multiple overnight guests.

Magaly recommends selecting a mattress based on your own comfort preferences, not just your guests’. “I would choose what you would like to sleep on because, after all, it is your sofa, and you can choose to sleep on it, too,” she says.

For shoppers looking for a sleeper sofa that balances seating functionality with overnight comfort, choosing the right mattress can significantly improve the overall experience.

What sets La-Z-Boy sleeper mattresses apart is the ability to customize comfort levels based on how the sleeper sofa will actually be used, whether for occasional guests, everyday lounging or regular overnight sleeping.

To ensure you make the right choice, consider visiting a La-Z-Boy showroom to test out the different mattress options in person. If you'd like to learn more about potential drawbacks, check out our guide on Common Problems with La-Z-Boy Sofa Beds.

What’s Next?

After reading this article, you now have the knowledge to choose the right La-Z-Boy mattress to go with your sofa bed.

That said, why not come and take a look at our sofa beds in person?

Visit us at a local La-Z-Boy location in Ottawa, Gatineau & Kingston to view our selection in person and take a seat test. You can also schedule an appointment online.

If you’re looking for more examples of our sofa bed selections at La-Z-Boy, check out this article that lists the Best-Selling Sofa Beds at La-Z-Boy.

Our interior design consultants are always eager to lend a helping hand. Take advantage of our interior design services to see how a sofa bed could fit in your home design. To learn more about La-Z-Boy sofas in general, take a look at our comprehensive Sofa Buyers Guide.

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