15 Year Warranty

The Comfort Care Great Lakes Firm is a heavy duty mattress that is double-sided (flippable) and has handles (8) on all sides. It also has a tempered heavy duty spring and a very strong edge. The Luxury Soft Latex and a lumbar-supporting Marvelous Middle section combine for a one-of-a-kind feel!

The Comfort Care line has won numerous and consecutive awards for its quality and value. This is because it presents to you the best materials and craftsmanship for a relatively low price. All of these mattresses are built in the United States and are backed by considerably long warranties.

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Great Lakes Firm - A Restonic Mattress

$1,984 for 66 x 80 mattress

Optional Boxspring Foundation:

Other Custom Accessories

All sheet sets are hand-made of luxurious material and include the fitted sheet, flat sheet and 1-2 pillowcases. They come in a variety of solid colors, most of which are pictured here. We will call you after your order is placed to discuss what colors are available for you at this time.
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Mattress Scale
very firm mattress
Approx. Height of Mattress: 13"

This Mattress Features:

CertiPUR-US certified foams are:


✓ Made without ozone depleters
✓ Made without PBDEs, TDCPP or TCEP (”Tris”) flame retardants
✓ Made without mercury, lead, and other heavy metals
✓ Made without formaldehyde
✓ Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million)
✓ Made without phthalates regulated by the Consumer Product Safety Commission


1" Deep Quilted Cover with Marvelous Middle Construction and 8 handles
1/2" Comfort Soft Foam in Quilt
1/2" High Density Firm Foam in Quilt

Mattress(Top Side)
1/2" Luxury Soft Latex
1/2" High Density Extra Firm Foam

Heavy Duty Insulator Pad
420 Foam Encased Tempered Bonnell Innerspring
Heavy Duty Insulator Pad

Mattress(Bottom Side)
1/2" High Density Extra Firm Foam
1/2" Luxury Soft Latex

1/2" High Density Firm Foam in Quilt
1/2" Comfort Soft Foam in Quilt 
1" Deep Quilted Cover with Marvelous Middle Construction and 8 handles


15 Total Years (15 full)

Great Lakes Firm - A Restonic Mattress

Another stand-out of the Award-Winning Restonic Comfort Care line, the Great Lakes Firm offers two layers of latex, high density extra firm layers, and the Marvelous Middle section that gives more support to the lumbar area of your body. That is a lot to pack into a mattress that is relatively low priced. Adding to its value, the Great Lakes has a steel-tempered coil unit and flip design.

I personally rest more easily (every last pun intended) knowing that I have a two-sided mattress. A flip mattress is what I grew up on and there's definitely something to be said about them providing more longevity. The old-school touch of having eight handles is great for aesthetics and also praticality. The foam encasement on this model seems to be stronger than that of many other models in its price range, so it has a very small amount of motion transfer or bounciness. 

I'd recommend this mattress to sleepers of all kinds, especially those who sleep on their backs and on their stomachs. It's not a total brick of a feel - it's medium firm-to-firm

The Great Lakes Firm is another Restonic mattress that is available in both standard and custom sizes



  • Shipping or delivery of this item to most areas within the 48 contiguous states only. Delivery of this item to Alaska, Hawaii, US Territories or APO/FPO addresses will require added charges. Please call customer service for rates and availability.
  • Free LTL freight delivery to most cities in the continental US. Destination must be accessible by large truck. Some locations may have a small surcharge.
  • LTL freight service is curbside to your driveway only. White Glove is available for an extra fee.
  • For complete details, read our Shipping and Return policies.



Measure all 4 sides of your mattress and bed frame before ordering.
We recommend you order the mattress 1 inch smaller than the space it is meant to fill. This will leave extra room for sheets, blankets, and variations in production size. Some people like a larger gap to really have room for your hands to reach down and change sheets easily. Please note that production size is not guaranteed to be exact. Most models are built within ±0.5 inches but the difference can be larger, especially on innerspring models. Custom mattresses are hand made by a factory worker who will take a standard mattress, then shorten it to your size. With the way spring coils are shaped, they will not work when cut in half, so an entire row of springs must be removed to modify mattress sizes. As each row is removed, the bed size changes by 1-2 inches, so your bed may not come exactly the size you order.

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Common Questions

What if it doesn't fit?
We will never ship out a mattress that exceeds the size you have ordered without contacting you first to check if the extra size will cause an issue. Since these are custom made for you they can not be returned, so please be careful when taking measurements. On some bed sets, the box spring will be a different size than the mattress so you will need to measure both pieces. Also, since beds are often set up not perfectly square, you will need to measure all four sides of the bed to find the correct size. Be sure to check for boards or bolts that might protrude in to the mattress area and order your pieces small enough to fit inside of these protrusions.
What sizes are available?
Any size is available upon request but with most models you are limited to being smaller than a King mattress. If you need an odd size bigger than a King, here are some models that can be supersized. Please call us to find out what prices would be.
Can I really order any size and shape?
At this time, with only 1 exception (found here), we only distribute 4-sided rectangular mattresses with no special notches cut from the corners. The size can be as large as a king, so up to 76" wide and up to 84" long. If you need an odd size bigger than a king, please call us to find out what models are available. You can also order a custom mattress small enough to fit in a baby's crib. Mattresses are formed by rows of metal springs and since springs cannot work if cut in half, your mattress core will be sized in 1-2 inch increments. This means that if you order 47x63 it will be built between 46x62 to 48x64 but most of the time it will come within 0.5 inches of the requested size. Please let us know how precise your size must be.
What about the box spring?
It is very important to measure the size of your box separate from your mattress because in many older bed sets, the box was made slightly smaller than the mattress. The length and width of solid foundation box springs can be custom made to fit exact dimensions. The thickness can not be customized but boxes are available in several standard thicknesses ranging from 4.5-9 inches.
How soon will my mattress arrive?
Once your order is paid for, a specialist from Michigan Discount Mattress will call you on the phone to verify your sizes and delivery information. Production will begin and usually takes 3-6 days. After production, the mattress will then be packaged at the warehouse within 48 hours to protect it during shipping to your home. Shipping takes 2-8 days depending on the destination city. The combination of producing, packing and delivering means that you should receive your mattress within 1-3 weeks of the day you order. Our streamlined process has successfully delivered 90% of our orders within 3 weeks.