Oversized Mattresses

Any shape or size – we’ve got you covered with Custom Built Mattresses

Our Oversized Mattresses are Modular

Mattress LayersYour mattress can be constructed to have different levels of firmness on each side of the bed, as well as lengthwise under shoulder or hip areas. These variable components are layered under full-sized toppers and quilted fabrics to ensure a seamless, but varied structure for all sleepers.

Move mattress If you ever move, your mattress is very easy to disassemble and move to your new home. It can fit through any small doorway.
Save Your mattress can last indefinitely because it can be flipped and refurbished. Rather than replace the whole mattress, we can simply replace the worn component at a much lower cost.

Oversized Mattresses Can be Built With a Variety of Materials. Our Most Popular Models are Below:


Von Epica Kona

Starting at $3739

The Von Epica Kona (like its smaller version, the Von Jasmine) is a very versatile mattress, designed for a lifetime of use. The top layer is a luxurious 3-inch layer of Talalay Latex, made from the sap of the rubber tree. The core layer is 4 inches of High-Density Foam, available in a variety of firmness levels. The base is another 4-inch layer of High-Density Foam, also adjustable for firmness. This gives the entire mattress up to 10 internal sections that can be adjusted for either side of the bed. If required, adjustments can be made along the body at the shoulder, back or hip region. In addition, each component can be individually replaced, giving the mattress a lifetime of use.


Von Epica Denali

Starting at $4699

The Von Epica Denali Mattress (like its smaller equivalent, the Von Orchid) is a layered modular mattress, offering up to 18 internal components that can be adjusted to accommodate a wide variety of support preferences. It also allows for adjustments along the distance from shoulder to hips for each sleeper. This is one our best sellers as it has the most amount of design flexibility. Made from resilient, sumptuous layers of High-Density/High-Resiliency Foam and Latex materials, the Denali comes in both plush or wool quilted versions. Because this mattress contains different easily replaceable and adjustable components, it can truly be a lifetime product.


Oversized Mattress Foundation

Our foundations come in either two to four pieces, depending on your chosen mattress size. We finish the foundations with an upholstery fabric that comes in a variety of color options. The tops have a no-slip fabric, we can also customize the height.

These foundations come with designer solid wood legs that firmly screw into the foundation base. As well, our multi unit foundations come with furniture clips to hold everything together.

For more details or pricing for our oversized mattress foundations, visit our Von Viva Mattress website.

Oversized Custom Bed Frames

At Sleep Boutique, we build a lot of oversized mattresses, and when we realized many of our customers needed high quality oversized beds as well, we wanted to make the very best options available.

Below are some links to highly reputable custom furniture makers. Built to order in North America, in virtually any style or size, including Alaskan Kings, Wyoming Kings and Family Beds.

If you are purchasing an oversized mattress (anything larger than a California King), we recommend a platform style design for maximum strength. This supports your oversized mattress without the need for a box spring or foundation.

For Upholstery Bed Frames

+ Custom Beds & Headboards website

For Metal Bed Frames

+ Adult Loft & Bunk Beds website

For Wood Bed Frames

Looking for partners in this area. Our recommendation at this time is to find a Local Furniture maker that can design and build to your specifications.

Please contact us if you need assistance.

833.244.6288 (toll free)
403.287.1960 (local)

Order Information:

Returns / Exchanges

Our mattresses are custom-designed and built specifically for you, therefore we are unable to offer returns; however we can do “Comfort Changes” if we did not get it right. Depending on your concern we can ship you new components to get it right, and then you can ship us back the component not working for you. We cover the cost of materials, but the cost of shipping will be your responsibility.


Production is 3 – 4 weeks, and delivery 1 – 2 weeks, depending on your location. If local, you are also welcome to pick up your mattress. Rush service is also available – please specify when you inquire. We cover the cost of shipping to most destinations. If the shipping goes over our allowances we will contact you. For customers in the United States we will cover delivery and customs broker charges and give you a price before we build. You or your company will be an importer on record. Shipping is normally curbside drop-off, but white glove delivery may be available in some areas.

Prefer to customize with us?

We use a vast array of organic, synthetic and durable materials to make our mattresses. Would you like to get some help refining the right mattress for you, and get a specific quote?

Perfect Sleep Guarantee

Satisfaction guaranteed

We’re completely confident in our service and our products. If you’re not sleeping better after the first 120 days on one of our built to order, standard sized mattresses, we’ll fix the problem by making adjustments or exchanging components...

Great personal and personable service. All of the staff are super helpful and really know their stuff. They work with you to create your perfect mattress and will keep working with you to ensure it’s right after your custom mattress is in your home. No buyer’s remorse here!

Great to find a mattress company with such a focus on quality and customer service.

SCHAENE WREGGITT Sleep Boutique Customer

Very happy with the service and expertise of Sleep Boutique. They were helpful in working with our budget and personal sleep preferences in selecting a mattress. It was manufactured within 2 weeks and we’ve been extremely happy with it so far. We’ll definitely be returning to SB in the future.

JOEL Sleep Boutique Customer

Ordered custom size mattress online. Staff was able to explain all available options and provide a solution that best fitted my needs. The mattress was exactly as expected. Delivery was within the time specified (ordered out of Ontario). Happy with the purchase.

SERGIY BONDAR Sleep Boutique Customer