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Specialty Firm Collection
The
Specialty Firm Collection, with two models—
The Rock and
The Stone—was designed by
Diamond Mattress for maximum support.
Diamond says, "Our customers asked for firm, and we listened.
The Rock and
The Stone are . . . our firmest tight-top and pillow-top mattresses." These are extra firm mattresses, rating 9 and 10 on a firmness scale of 1-10.
Of the two
Specialty Firm models, tight-top
The Rock is the firmer at 10, and pillowtop
The Stone at 9 is only slightly softer. Both models rely on a
VertiCoil innerspring for support.
VertiCoil is an open offset alternating coil innerspring system designed and made by
Leggett & Platt. Those used in the
Specialty Firm Collection are tri-zoned for lumbar support. Offset coils are hourglass-shaped, like Bonnell coils, but have flattened ends connected to adjoining coils by a hinge-like helical wire, making this more flexible than a Bonnell innerspring.
VertiCoil has 21% more coils than the traditional Bonnell coil innerspring.
Edge support is provided by foam encasement.
The comfort layers of the
Specialty Firm models consists of
Eco-Flex, foams made from plant-derived oils. This means less outgassing and less use of petroleum-based polyols. The role of the
Eco-Flex is to cushion the firmness without compromising it so the user gets support and comfort.
Mattresses in the
Specialty Firm Collection are not compatible with adjustable bases. They are not flexible enough. But
Diamond Mattress makes a hardwood foundation which provides the needed support in 8" and 4" heights. They also sell a heavy-duty metal frame for getting the foundation off the floor.
Diamond Mattress warranties the
Specialty Firm Collection mattresses,
The Rock and
The Stone, for 20 years. But they say, "Although our mattresses have been tested and will last 20 years, we recommend changing every 8 to 10 years. As your body changes, your mattress needs will change over time."
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Mattress and Bed Set Model Name
Diamond Mattress Specialty Firm Collection
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Price Category
$$
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Listed Manufacturer
Diamond Mattress
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Location
Diamond Mattress, Attn: Customer Service, 3112 E. Las Hermanas St., Rancho Dominguez, CA 90221
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Bed Classification
Innerspring
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Level of Firmness
Ultra Firm
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Inner Bed Composition
Offset alternating coil innerspring and foam comfort layer
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Mattress Edge Support
Foam encasement
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Mattress Cover Composition
Durable rayon knit
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Total Mattress Height
13 inches
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Bed Foundation
Hardwood foundation
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Special Features
Extra firm support, Plant-based foam cushioning
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Sleep Trial
not stated
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Bed Warranty
20 year limited warranty
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Manufactured In
U.S.A.
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Restrictions
adequate foundation required
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Website
http://www.diamondmattress.com/Diamond-Mattress/Default.aspx
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