Introduction
This manual provides essential information for the safe and efficient use of your DEWINNER Memory Foam Mattress and Slatted Bed Base. Please read these instructions carefully before assembly and use, and retain them for future reference.
Important Safety Information
- Keep plastic packaging away from children to prevent suffocation hazards.
- Do not exceed the recommended weight limit for the bed base.
- Upon opening the mattress, ventilate the room for 24-72 hours to dissipate any "new mattress" odor.
Setup Instructions
1. Unpacking and Expanding the Mattress
Your DEWINNER memory foam mattress is vacuum-packed for convenient shipping. Follow these steps for proper expansion:
- Carefully remove the mattress from its outer packaging. Avoid using sharp objects that could damage the fabric.
- Place the rolled mattress on a clean, flat surface, preferably on the bed base where it will be used.
- Cut and remove the plastic wrapping. The mattress will begin to expand immediately.
- Allow 24 to 72 hours for the mattress to fully decompress and reach its intended shape and firmness. Ventilation during this period is recommended.

Figure 1: Mattress Expansion Process. Unpack, allow to expand, then rest. Full expansion typically takes 24-72 hours.
2. Assembling the Slatted Bed Base
The DEWINNER slatted bed base is designed for quick and easy assembly. All necessary parts, tools, and instructions are included in the package. Assembly typically takes 30 minutes or less.
- Unpack all components and verify against the parts list provided in your package.
- Follow the step-by-step diagrams and instructions included with your bed base.
- Ensure all screws and fasteners are securely tightened before placing the mattress on the base.
- The bed base includes 8 support feet and 13 slats for optimal mattress support.

Figure 2: DEWINNER Mattress and Slatted Bed Base. The complete set includes a 25cm memory foam mattress and a slatted bed base with 8 feet.
Usage Guidelines
Mattress Usage
- The memory foam mattress is designed to distribute body weight evenly, providing support and comfort.
- It offers a medium firmness level, suitable for various sleeping preferences.
- The mattress features good breathability to help keep it dry and comfortable.

Figure 3: Mattress Features. Illustrates pressure relief and breathable softness for ideal rest.

Figure 4: Superior Body Support. The DEWINNER mattress provides excellent body support and comfort, with a medium firmness level.
Bed Base Usage
- The slatted bed base provides a stable foundation for your mattress, enhancing its performance and longevity.
- Ensure the mattress is centered on the bed base to prevent uneven wear.
- The space under the bed base can be used for storage, optimizing your room's space.
Maintenance
Mattress Care
- To maintain hygiene and extend mattress life, use a mattress protector.
- Spot clean any spills immediately with a mild detergent and damp cloth. Avoid saturating the mattress.
- Do not machine wash or dry clean the mattress.
- Rotate the mattress every 3-6 months to ensure even wear, though flipping is not necessary for memory foam mattresses.
Bed Base Care
- Periodically check all screws and fasteners on the bed base to ensure they remain tight. Tighten if necessary.
- Wipe the bed base frame with a damp cloth to remove dust.
- Avoid placing excessive weight on specific areas of the bed base to prevent damage to the slats.
Troubleshooting
If you encounter any issues with your DEWINNER mattress and bed base, please refer to the following common solutions:
- New Mattress Odor: This is normal for vacuum-packed memory foam mattresses. Ensure the room is well-ventilated for 24-72 hours after unpacking.
- Incomplete Mattress Expansion: Allow the full 72 hours for the mattress to expand. Ensure it is placed on a flat surface in a warm room, as cooler temperatures can slow expansion.
- Bed Base Instability: Check all assembly points. Ensure all screws are fully tightened. Verify that the bed base is on a level floor.
- Squeaking Noises: Inspect the bed base for loose connections. Tighten any bolts or screws. Ensure the slats are properly seated.
For issues not covered here, please contact DEWINNER customer support.
Product Specifications
| Feature | Detail |
|---|---|
| Brand | DEWINNER |
| Model Name | HM-25 |
| Product Dimensions (L x W) | 190 cm x 160 cm |
| Mattress Thickness | 25 cm |
| Total Height (Mattress + Base) | Approximately 35 cm |
| Mattress Type | Memory Foam |
| Mattress Firmness | Medium |
| Mattress Filling Material | High-density foam |
| Mattress Cover Material | Polyester and cotton |
| Bed Base Type | Slatted Base with 8 feet |
| Number of Slats | 13 |
| Color | Grey |
| Special Features | Padded, Pressure reduction, Postural support, Hypoallergenic |
| Components Included | Memory Foam Mattress, Slatted Bed Base |
| Country of Origin | China |
Warranty Information
DEWINNER products are manufactured to high-quality standards. Specific warranty details may vary. Please refer to the warranty card included with your product or contact DEWINNER customer support for detailed information regarding your product's warranty coverage.
Customer Support
For any questions, concerns, or assistance with your DEWINNER Memory Foam Mattress and Slatted Bed Base, our dedicated customer service team is available to provide personalized support and resolve your inquiries promptly.
Please visit the official DEWINNER store on Amazon or refer to the contact information provided in your product packaging for support.
