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Perfect Rest Isabella Collection
The Isabella Collection is a mattress series within the Perfect Rest Collection by Diamond Mattress. The Perfect Rest models feature an innerspring made of individually wrapped coils made by Diamond Mattress, a vertically-integrated company, which processes its own materials, including springs and foams. They also feature triple-zoned lumbar support and plant-based cushioning foams.

Currently, Diamond Mattress lists five Isabella models. They are, with their firmness levels and heights: Isabella Firm (medium firm, 10½"), Isabella Plush (medium plush, 11"), Isabella Euro Top (plush, 11½"), Isabella Pillow Top (luxury plush, 12"), and Isabella Super Pillow Top (super soft, 14").

With Diamond Mattress's pocket coil system in the Perfect Rest Isabella Collection, each coil responds to body weight independently, conforming support to body contours. This is to provide pressure relief to parts of the body, such as shoulders and hips, which would otherwise bear a disproportionate share of the weight. This also minimizes motion transfer and partner disturbance. The coil count is only 597 because Diamond uses larger, heavier coils for longer durability.

Edge support for the mattress and perimeter support for the pocket coils is provided by foam encasement. Heavy-duty foam surrounds the mattress to hold the coils in place and to support the sleeping surface. This is to prevent roll-off and to make the entire surface usable, even to the edge.

Above the coil unit are the comfort layers. These are made of Eco-Flex, essentially plant-based foam. A significant portion of the polyols used to formulate the foam are from plant-derived oils. This reduces the use of petroleum.

The Isabella mattresses are covered with 4-way stretch-knit Rayon, a breathable and durable fabric. It is also resistant to allergens, such as dust mites. The cover is not removable or washable. It does have a non-skid bottom to hold sheets in place and keep the mattress from scooting around.

Diamond makes a hardwood foundation to support mattresses in the Perfect Rest Isabella Collection. It also sells Leggett & Platt adjustable bases, such as the S-Cape Lifestyle Base and the Pro-Motion Lifestyle Base. All Diamond Mattress Perfect Rest Collection mattresses carry DM's 20-year warranty. However, Diamond Mattress recommends changing mattresses every 8 years to meet changing needs and take advantage of updated technology.

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