Many mattress shoppers are simply looking for something similar to the mattresses that they grew up on: a long-lasting, firm and simple bed that is reasonably affordable. The Bethany Firm is all of those things and is made in the USA by Restonic Mattress

Basic isn't always synonymous with less-than. While it's got an old fashioned heavy duty spring unit (390 Bonnell) and lacks memory foam or latex foams, the Bethany Firm also contains a high density foam layer, is crafted from state of the art engineering, and all of its foams are CertiPUR-US non-toxic.

The lack of foam encasement on this model's edges actually aids its dense foam layers in breathing better, so that you don't sleep too hot. There are two heavy duty insulator pads so that this bed provides a very stable and strong sleep surface.  The Bethany Firm is a well-built mattress that is made to last and it's made available at a relatively low price

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Bethany Firm - A Traditional Firm Mattress

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Mattress Scale

Approx. Height of Mattress: 9"

This Mattress Features:

CertiPUR-US certified foams are:

CertiPur-US ✓ 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" Quilted Cover

Mattress(Top Side)
1.5" CertiPUR-US Certified High Density Support Foam 
Heavy Duty Insulator Pad 

390 Tempered Bonnell Innerspring
Heavy Duty Insulator Pad


5 Total Years (5 full)

Expert Review:
Bethany Firm - A Traditional Firm Mattress

Restonic has become very well known for both luxury mattress models and heavy duty beds. The Bethany Firm is moreso the latter and considering its likely longevity, it's quite the great value, dollar-for-dollar. 

Pocketed Coil spring units are more flexible than Bonnell Coils but when you are looking for something on the firmer end of the spectrum, flexibility may take a back seat to durability and rigidity. The 390 Bonnell spring in the Bethany is a low gauge metal (thicker) and provides the sturdy feel that you may remember from mattresses long ago. 

This mattress is great for anyone who is seeking a firmer sleeping surface, that will last, that is on a relatively limited budget


Other models you may like:

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  • Free shipping or delivery of this item to 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.
  • Some mattresses and accessories will ship via FedEx or USPS, otheres will use a freight service.
  • Free LTL freight delivery to most areas in the continental US. Destination must be accessible by large truck. Some locations may have a small surcharge.
  • Delivery service is to your driveway or parking lot only. White Glove is available for an extra fee.
  • If you have any special deadlines or delivery requirements, please give us a call to review options.
  • For complete details, read our Shipping 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.

Common Questions About Ordering Custom Size Mattresses

What if it doesn't fit?
We will never ship out a custom mattress or boxspring that exceeds the size you have ordered without contacting you first to check if the size variance 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 in the corners for boards or bolts that often protrude in to the mattress area, and order your custom mattress and custom boxspring small enough to fit inside of these protrusions.
What sizes are available?
Any custom size is available upon request but with most models you are limited to being smaller than a King mattress. If you need a custom size bigger than a King, here are some models that can be supersized. If you don't see your size listed, please call us to find out what prices would be.
Can I really order any size and shape?
Yes, we are able to make some of our models in odd shapes (like cut or rounded corners) for antique beds, RVs, and even boats; however most of them can only be done in a 4-sided rectangle. Here is a model that can be made in any shape. You can call us to order by phone, or just select your approximate size, place the order online, and we will definitely give you a call back to discuss you exact shape before we start building anything.
We recommend you order your custom mattress 1-2 inches smaller than the space it is meant to fill. This will provide extra room for tucking in sheets and blankets.
Our online shopping lets you select a model to the nearest inch but most of the time we can even do half-inch increments for a perfect fit. We call ALL of our online buyers before we start building anything. This allows us to discuss your exact size and make changes before production begins. This lets you buy online now without fear of getting the wrong size.
What about the boxspring ?
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 a solid foundation boxspring can be custom made to fit exact dimensions. The thickness can not be customized but boxes are available in several standard thicknesses ranging from 2-9 inches.
How soon will my custom size 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 then begin and usually takes 1-3 weeks. After production, the custom mattress will be packaged at the warehouse to protect it during shipping to your home. Shipping takes 2-10 days depending on the destination city. The combination of producing, packing, and delivering means that you should receive your custom mattress within 2-6 weeks of the day you order. If you need a more accurate estimate, or have a quicker deadline, please give us a call to discuss expediting options.

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