Introduction
This manual provides essential information for the setup, use, and maintenance of your Beautyrest Black Series Three 14.25" Extra Firm King Mattress. Please read these instructions carefully to ensure optimal performance and longevity of your product.
Setup
Your Beautyrest Black mattress is shipped full-size and cannot be compressed due to its high-quality manufacturing and substantial components. It is recommended to have assistance for moving the mattress due to its bulky nature and weight (approximately 166.2 pounds).

Image: The Beautyrest Black Series Three King Mattress in a modern bedroom setting, illustrating its full size and appearance.
Compatible Bases
This mattress is compatible with various bed bases, including:
- Box Spring
- Wooden Slat
- Platform
- Adjustable Base
Ensure your chosen base provides adequate support across the entire mattress surface.

Image: The Beautyrest Black mattress displayed with text indicating compatibility with Box Spring, Wooden Slat, Platform, and Adjustable Bases.
Operating (Usage)
The Beautyrest Black Series Three mattress is engineered for an extra firm feel, providing maximum stability and strong support, particularly suited for back and stomach sleepers. Its design incorporates advanced technologies for individualized support, motion separation, and temperature management.

Image: A visual scale highlighting the 'Extra Firm' nature of the mattress, designed for minimal give and strong support.
Key Features:
- Triple-Stranded Pocketed Coil Technology: This advanced system provides individualized support and minimizes motion transfer, allowing for undisturbed sleep.
- Enhanced Temperature Management: Cooling yarn and cashmere woven into the mattress surface, along with specialized vertical fibers, help dissipate heat away from the body throughout the night. Micro Diamond Memory Foam, infused with diamond particles, further aids in heat transfer for a cool sleep environment.
- Advanced Pressure Relief: SurfaceTouch Gel Memory Foam is quilted into the mattress surface for immediate pressure relief. Self-Response Latex contours to your body's unique pressure points, maximizing airflow for responsive comfort.

Image: A detailed cutaway diagram illustrating the various layers of the Series Three Extra Firm mattress, highlighting enhanced temperature management, advanced pressure relief, and individualized support.

Image: A cutaway view of the mattress showing a person lying on their side, demonstrating how the inner spring system and comfort layers provide support and contouring.
Product Overview Video
Video: An overview of the Beautyrest Black Mattress Collection, detailing its luxury features, advanced support, and temperature management technologies.
Maintenance
Proper care and maintenance will extend the life of your Beautyrest Black mattress.
General Care:
- Mattress Protector: It is highly recommended to use a mattress protector to shield your mattress from spills and stains, contributing to its overall health and lifespan.
- Avoid Liquids: Do not apply liquids directly to the mattress. Moisture or chemicals can stain the fabric, worsen soiled areas, and cause premature breakdown of the foam, potentially damaging the product.
- Cleaning Spills: For soiled areas, apply baking soda, let it stand for approximately 15 minutes, then vacuum. Repeat as needed. Air out the product as much as possible.
- Rotation: Regularly rotating your mattress (head to foot) can help promote even wear and extend its comfort life.
Troubleshooting
If you experience any issues with your mattress, consider the following general advice:
- Uneven Wear/Sagging: Ensure your mattress is on a compatible and supportive base. Rotating the mattress every 3-6 months can help distribute wear evenly.
- Comfort Issues: Allow a break-in period for your body to adjust to the new mattress. If discomfort persists, verify that the mattress is placed on a flat, stable surface.
- Odor: New mattresses may have a slight odor upon unboxing. This is normal and typically dissipates within a few days. Airing out the room and mattress can help.
For specific concerns or issues not resolved by these steps, please refer to the warranty information or contact Beautyrest customer support.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 79.5"L x 76"W x 14.25"Th |
| Item Weight | 166.2 pounds |
| Model Number | 700812420-1060 |
| Brand | Beautyrest |
| Size | King |
| Top Style | Pillow Top |
| Cover Material | Polyester/Polymide Blend |
| Number of Layers | 8 |
| Fill Material | Latex, Memory Foam, Pocketed Coils |
| Special Features | Breathable, Edge Support, Low Motion Transfer, Pressure Relief, Temperature Regulating |
| Color | Black |
| Coil Type | Pocketed Coil |
| Assembly Required | No |
| Manufacturer | Serta Simmons Bedding, LLC. |
Warranty and Support
Your Beautyrest Black mattress comes with a 10-Year Limited Warranty. For complete details and guidelines, please refer to the official Beautyrest Mattress Warranty information provided at the time of purchase or on the manufacturer's website.
All foams used in Beautyrest mattresses are CertiPUR-US certified, ensuring they meet rigorous standards for content, emissions, and durability. Beautyrest mattresses are proudly assembled in the U.S.A. with global components.
Manufacturing Process Video
Video: A look into the manufacturing process of Beautyrest mattresses, highlighting their assembly in the U.S.A. with global components and commitment to quality.
For further assistance or to explore other Beautyrest products, visit the Beautyrest Store.

