Graphene Cool Hybrid Mattress in bedroom setting on a white wood frame, highlighting the tall 14.5 inch quilted profile.
Graphene Cool Hybrid Mattress in bedroom setting on a white wood frame, highlighting the tall 14.5 inch quilted profile.
Graphene Cool Hybrid Mattress diagram showcasing cooling memory foam layers and a patented zoned nested coil system.
Graphene Cool Hybrid Mattress diagram showcasing cooling memory foam layers and a patented zoned nested coil system.
Close-up of the Graphene Cool Hybrid Mattress showing the premium quilted texture and durable moisture-wicking fabric.
Close-up of the Graphene Cool Hybrid Mattress showing the premium quilted texture and durable moisture-wicking fabric.
Front view of the 14.5 inch Graphene Cool Hybrid Mattress featuring a luxury Euro Top and charcoal grey side panels.
Front view of the 14.5 inch Graphene Cool Hybrid Mattress featuring a luxury Euro Top and charcoal grey side panels.
Angled view of the Graphene Cool Hybrid Mattress highlighting the 14.5 inch Euro Top and luxury quilted fabric top.
Angled view of the Graphene Cool Hybrid Mattress highlighting the 14.5 inch Euro Top and luxury quilted fabric top.
Graphene Cool 14.5" Euro Top Quilted Hybrid Mattress by Diamond Mattress

Brand Diamond

$1,599.99
$1,849.99
Save $250.00
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Best For Every Sleep Position
Firmness 3 Deffernt Options

Why Cloudy Mattress

1. The Cloudy Price Promise

Find a better price elsewhere? We’ll match it. Every Cloudy customer deserves the best rest at the best value—because true quality doesn’t need to cost more.

2. 120-Night Comfort Guarantee

Experience your Cloudy mattress for up to 120 nights. If it’s not everything you dreamed of, we’ll exchange it or refund you—simple, transparent, and stress-free.

3. Expert Guidance, Every Step

Our trained Sleep Experts know comfort inside and out. Whether you shop online or in-store, we’ll help you find the right mattress, pillow, and base to elevate your nights and refresh your mornings.
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Only 20 left in stock

We’ll ship your order within 2–4 business days.

120 Night Sleep Trial

Take your dream bed home & rest easy—love it or we will find the better fit for you.
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20 Year Warranty

20-year non-prorated warranty.
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Free USA Wide Delivery

We offer free delivery on orders over $100. Ready to ship in 2-4 business days.

Product Description

The Diamond Graphene Cool 14.5" Hybrid Mattress wraps a lofty quilted euro top construction around next-generation comfort. 

You can choose Medium, Firm, or Plush, letting every sleep position dial in the perfect feel. 

A layer of graphene-infused memory foam pulls heat away for breezy, breathable temperature regulation, while open-cell design melts pressure for those “ahh” moments. 

Because of this cooling layer, side- and back-sleepers enjoy deeper relief instead of tossing for cool spots. 

Underneath, individually wrapped coils are zoned to keep hips level and encourage enhanced spinal alignment without waking your partner (true motion isolation for couples). 

Finally, you get a 120-night sleep trial, a 20-year warranty, and free shipping in the USA.

Mattress Size

✅ Twin: Provides a comfortable sleep space for one child or adult.  

✅ Dimensions: 39" wide x 75" long.

 

✅ Twin XL: Perfect for taller individuals, ensuring a comfortable sleep.

✅ Dimensions: 39" wide x 80" long.

 

✅ Full: Children, Single Adults, Adults with Children and/or Pets

✅ Dimensions: 54" wide x 75" long.

 

✅ Queen: The most popular size, providing ample space for two adults to sleep comfortably. 

✅ Dimensions: 60" wide x 80" long.

 

✅ King: Experience generous space without crowding your partner. 

✅ Dimensions: 76" wide x 80" long.

 

✅ California King: Perfect for taller partners, Experience generous space without crowding your partner.

✅ Dimensions: 72" wide x  84" long.

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key mattress benefits
Product Feature Image
  • CoolTouch Temperature-Regulating Fabric
    Engineered with conductive yarns to actively disperse heat, helping maintain a cool and comfortable sleep surface.

  • Graphene Memory Foam
    Infused with graphene to regulate temperature, draw away excess heat, and provide targeted pressure relief for uninterrupted sleep.

  • CertiPUR-US® HD Comfort Layers
    High-density, certified foam promotes proper spinal alignment while delivering durable, breathable comfort.

  • Patented Zoned Nested Coil System
    Designed with targeted zones to provide up to 25% more support, enhance back support, and reduce motion transfer for better conformability.

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Graphene Cool Hybrid Mattress in bedroom setting on a white wood frame, highlighting the tall 14.5 inch quilted profile.
Graphene Cool Hybrid Mattress diagram showcasing cooling memory foam layers and a patented zoned nested coil system.
Close-up of the Graphene Cool Hybrid Mattress showing the premium quilted texture and durable moisture-wicking fabric.
Front view of the 14.5 inch Graphene Cool Hybrid Mattress featuring a luxury Euro Top and charcoal grey side panels.
Angled view of the Graphene Cool Hybrid Mattress highlighting the 14.5 inch Euro Top and luxury quilted fabric top.

Graphene Cool 14.5" Euro Top Quilted Hybrid Mattress by Diamond Mattress

$1,599.99