1. Product Overview
The ACWOO Self-Heating Back Support Belt is designed to provide support and warmth to the lumbar region. It features integrated magnets that activate upon contact with the skin, aiming to stimulate local circulation and offer stability to the lower back. The ergonomic design conforms to the natural curvature of the waist, which may assist in managing discomfort associated with conditions like disc herniation and muscle strain.

Figure 1: Front and back view of the ACWOO Self-Heating Back Support Belt, showcasing its design and internal heating elements.
Constructed from high-quality polyester fabric, the belt is designed for comfortable wear. Its elastic nature allows for easy application and removal, making it suitable for various daily activities.

Figure 2: Key features including comfortable material, high elasticity, and the placement of 12 magnets.
2. Safety Information
- Do not use if you have a pacemaker or other electronic medical implants.
- Consult a healthcare professional before use if you have any pre-existing medical conditions, especially skin sensitivities, circulatory issues, or are pregnant.
- Discontinue use if you experience any discomfort, irritation, or adverse reactions.
- Do not wear the belt for extended periods without breaks.
- Keep out of reach of children.
3. Sizing Guide
To ensure optimal fit and effectiveness, measure your waist circumference and refer to the sizing chart below. The belt should fit snugly but comfortably, without being too tight.

Figure 3: Sizing chart indicating waist measurements for different belt sizes.
| Size | Waist (inches) | Waist (cm) |
|---|---|---|
| S | 38-42.5 | 97-108 |
| M | 40-47.6 | 102-121 |
| L | 41-45.2 | 105-115 |
| XL | 44.5-51.9 | 113-132 |
4. Setup and Wearing Instructions
Follow these steps to properly wear your ACWOO Self-Heating Back Support Belt:
- Prepare the Belt: Lightly moisten the inner surface of the belt (the side with the heating elements) with a warm, damp cloth. This helps activate the self-heating function.
- Position the Belt: Place the main back support panel on your lower back, ensuring the heating elements are directly against your skin.
- Wrap and Secure: Wrap the primary elastic straps around your waist and secure them at the front.
- Adjust for Comfort: Attach the secondary elastic straps for additional compression and support. Adjust until the belt feels snug and comfortable, but not overly tight. The belt should allow for normal breathing and movement.

Figure 4: Visual guide demonstrating the four steps to correctly wear the back support belt.
5. Operation
The self-heating function of the ACWOO Back Support Belt is activated by contact with the skin and moisture. After approximately 30 minutes of wear, a warming sensation should begin. The intensity of the warmth can vary based on individual body temperature, skin sensitivity, and the firmness of the belt's application. A firmer application may enhance the warming effect.
The belt is designed to provide comfortable support during various activities, including driving, sports, housework, and office work.

Figure 5: Examples of activities where the back support belt can be worn for comfortable support.
6. Maintenance
Proper care will extend the life of your ACWOO Self-Heating Back Support Belt:
- Cleaning: The thermal belt can be gently brushed or wiped clean with a damp cloth.
- Do Not Soak: Do not immerse the belt in water or machine wash it, as this may damage the heating elements and material.
- Drying: Air dry the belt completely before storing. Do not tumble dry or expose to direct heat.
- Storage: Store in a cool, dry place away from direct sunlight.
7. Troubleshooting
- No Warming Sensation:
- Ensure the inner surface of the belt was lightly moistened with a warm, damp cloth before wearing.
- Verify the belt is worn directly against the skin.
- Check if the belt is applied snugly. A looser fit may reduce the warming effect.
- Allow sufficient time (at least 30 minutes) for the warming sensation to begin.
- Excessive Heat/Discomfort:
- Loosen the belt slightly to reduce compression.
- Remove the belt if discomfort persists.
- Ensure your skin is clean and free from lotions or oils that might affect heat sensation.
8. Specifications
- Brand: ACWOO
- Model Number: 3561221
- Material: Polyester
- Age Range: Adult
- Specific Uses: Lumbar support, disc herniation support
- Package Dimensions: 31.1 x 17.2 x 2 cm
- Item Weight: 210 grams
9. Warranty and Support
For warranty information or product support, please refer to the retailer where the product was purchased or contact ACWOO customer service directly. Keep your purchase receipt as proof of purchase.