5 Year Warranty

The Kepler Medium Firm mattress by Symbol is a great cost-efficient solution for many mattress needs. With Symbol's own foam dispersed in sensical layers and the ability to have this one made in custom sizes for RV's, antique beds and boats, we're happy to list this model in standard sizes. If you like a mattress that isn't too thick, have a limited budget and require a strong support, this model is a great choice for you.

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Kepler - Cheap, High Quality All-Foam Mattress

SALE reg.
Twin $272 $375
Twin XL $312 $425
Full $312 $425
Queen $352 $500
King $514 $700
Cal King $599 $800
Other sizes

free shipping

Mattress Scale
medium firm mattress
Approx. Height of Set: 18" (Matt 8.5" Base 9")

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


Quilted Cover
FR Fiber Layer
3/4" Symbol Foam

Mattress(Top Side)
2.75" SUPER SOFT Foam


optional matching prism solid wood foundation

5 Total Years (5 full)

Kepler - Cheap, High Quality All-Foam Mattress

For cost-efficiency and performance, you almost can't beat the Kepler. We've recently added it to our site because some people require a tad bit more thickness and would like a medium-firm sleeping surface but would like to have relative ease moving the mattress and need a cheap mattress model. Very popular in dorms and with custom mattress needs, we've recently seen an increase of people who would wish to have something like the 7 inch All Foam Affordable Mattress but have a bit more support. The Kepler offers just that and is made available at its lowest price by Michigan Discount Mattress. With several layers of Symbol's very own foam, it's a feel that is quite specific - in a positive way. The SUPER SOFT layer makes this a great mattress to fall asleep on but the support core offers the strength and dependability that bad backs require. If the above-mentioned Newton is a "5" on the firmness scale, consider the Kepler something like a 5.5. Just a tad firmer.


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  • Shipping or delivery of this item to most areas within the 48 contiguous states only. We cannot offer delivery of this item to Alaska, Hawaii, US Territories or APO/FPO addresses without added charges. Please call customer service for rates and availability.
  • Nationwide and "free" rates are valid to most cities in the continental US. Destination must be accessible by large truck. Some locations may have a small surcharge.
  • For complete details, read our Shipping and Return policies.
  • Please call customer service for returns.

For local delivery rates and polices, check the Delivery Page



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