Posture Balance Sierra Mattress

Posture Balance Sierra Mattress

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Retail Price: $483.00
Your Savings: $187.00
Our Price: $339.00
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The Posture Balance Verti-Coil Collection is our value line of mattresses designed for people who want a good quality mattress at an affordable price for themselves, guest rooms, or for children. The Posture Balance Verti-Coil Collection uses our advanced 460 Verti-Coil Spring system that relieves pressure and reduces motion transfer much better than the traditional bonnell spring systems, although not as well as our Diamond-made, individually-wrapped coils found in our more premium mattresses. In addition, it uses our Tri-Zoned foam-encased design to increase the sleeping surface and prevent the feeling of rolling off. These beds reduce tossing and turning through the pressure-relieving support of our luxurious Eco-Flex plant-based comfort layers and our foam-encased verti-coil support system.

Made in USA!

Mattress Features & Benefits

  • The foam-encased design provides a supportive, firmer edge that allows you to sleep all the way to the edge of the bed without feeling like you will roll off. It increases the sleeping surface and reduces vibrations. Also, all of our foam-encased beds feature Tri-Zoned Lumbar Support to give you additional support in your lumbar region where you need it most.
  • Maintains a cool, balanced temperature throughout the night, allowing muscles to breathe and heal
  • Minimizes pressure points to reduce pain and tossing and turning by combining layers of our Eco-Flex plant-based cushioning foam over our spring system
  • Always returns to its original shape to support you night after night
  • We process all the materials right here at Diamond, so we know they are the best and can offer a 20 year warranty that we have stood behind for 4 generations*


The Posture Balance collection is a promotionally priced collection designed as a great quality, durable mattress that will relieve pressure and last. It is designed for guest bedrooms, children, and for people looking for an affordable, comfortable mattress that they can use for a few years before upgrading to a more premium bed.


Medium High


Firmness & Height

ModelFirmness (learn more)Height
Dakota Pillow Top
Plush (3)12"
Everest Euro TopLuxury Plush (2)12"
Sierra Tight Top
Firm (9)11"
Avalon Tight Top
Medium (6)10.5"
Cambridge Tight Top
Firm (9)9"

Comfort Layer

Layers of High Density Eco-Flex Plant-Based Foam 

Support Layer

Verti-Coil® Spring System, which has 21% more coils than the traditional spring unit while helping to relieve pressure.

Base Layer

Orthopedic Eco-Flex Plant-Based Base Layer

Edge Support

Foam Encased Edge Support System with Tri-Zoned Lumbar Support

Cover Fabric

Rayon 4-Way Stretch Knit Cover



Allergen and Dust Mite Resistant


Non-Skid Bottom



Matching Sustainable Hard Wood Foundation

Adjustable Friendly

No, see our adjustable bases to learn more


20 Year Limited Warranty

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