Diamond Serendipity CoolSpringGEL Firm

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Diamond Serendipity CoolSpringGEL Mattress Firm
Featuring Diamond made 7 series individually wrapped coils and Cool GEL technology, the CoolSpringGEL Serendipity models have been designed for maximum support. Developed to provide long-lasting enjoyment, these beds combine durable comfort layers, which have been designed to keep you cool at night, with a support system that does not transfer motion between partners, allowing you to sleep undisturbed throughout the night. These beds also reduce tossing and turning through the pressure relieving support of our luxurious Eco-Flex plant-based comfort layers and the most advanced, high quality components.

Firmness & Height

Model Firmness Height
Serendipity Pillow Top Plush (4) 14″
Serendipity Euro Top Medium (6) 14″
Serendipity Firm Firm (9) 11″


Mattress Features & Benefits
Exclusively available by Diamond Mattress, our Individually Wrapped Coils conforms to your body for a personalized fit.
Reduces tossing and turning at night by allowing each coil to move independently and relieves pressure points
Your partner’s movements will leave you undisturbed and sleeping soundly because our exclusive spring units do not transfer motion
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 we can offer a 20 year warranty that we have stood behind for 4 generations*

Adjustable Friendliness

*Note: 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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Additional information


California King, Eastern King, Full, Full XL, Queen, Twin, Twin XL

With Box Foundation