Introduction
This manual provides essential information for the proper use and maintenance of your BERTSCHAT Cooling Vest with Phase Change Material (MCP) elements, model C24. The vest is designed to offer cooling comfort during physical activities by utilizing advanced thermoregulatory technology.
The MCP elements within the vest facilitate a thermal exchange with your body heat. As your body temperature rises, the MCP material absorbs heat and melts, creating a cooling sensation. When the elements are cooled down (e.g., in a refrigerator or freezer), the material re-solidifies, allowing for repeated use.
Setup Instructions
1. Preparing the Cooling Elements
Before initial use, ensure all MCP cooling elements are fully solidified. Place them in a refrigerator or freezer until they are firm to the touch. This process typically takes a few hours, depending on the cooling method.
2. Inserting Elements into the Vest
Once solidified, carefully insert the MCP cooling elements into the designated compartments of the vest. Ensure they are evenly distributed for optimal cooling performance.
3. Adjusting the Vest
Wear the vest and adjust the shoulder and side straps to achieve a comfortable and secure fit. The vest features an adjustable design to accommodate various body sizes, ensuring freedom of movement while maintaining close contact for effective cooling.

This image displays the BERTSCHAT cooling vest, highlighting its adjustable shoulder and side straps for a customized fit. The vest is designed as a unisex model, suitable for various body types.

A detailed view of the vest's adjustable velcro strap, demonstrating how users can customize the fit around the shoulders or sides for optimal comfort and cooling.
Operating Instructions
1. Activating Cooling
Once the solidified MCP elements are in place and the vest is adjusted, wear it to begin the cooling process. The C24 elements are specifically engineered to maintain a comfortable temperature of approximately 24°C (75°F) against your body.
2. Cooling Duration
The cooling duration for C24 elements typically ranges from 2 to 6 hours. This duration can vary based on several factors, including the ambient temperature, your activity level, and how well the vest is fitted.
3. Re-activation
For continuous cooling, it is recommended to have a spare set of MCP elements ready. When the active elements begin to lose their cooling effect, simply swap them with a pre-solidified set. Place the used elements back into a refrigerator or freezer for re-solidification.

This image shows the individual blue Phase Change Material (MCP) cooling elements that are inserted into the vest's compartments. These elements are responsible for the cooling effect.

This image illustrates the recommended use of C24 cooling elements for outdoor activities such as cycling, hiking, and motorcycling, emphasizing their suitability for active individuals.
Maintenance
1. Vest Care
To clean the vest, refer to the care label attached to the product for specific instructions. General care instructions include hand washing, machine washing, or dry cleaning only. Follow the most appropriate method indicated on your vest's label to preserve its material and integrity.
2. Cooling Element Care
The MCP cooling elements should be wiped clean with a damp cloth. Do not machine wash, tumble dry, or dry clean the cooling elements, as this can damage them.
3. Storage
When not in use, store the vest and cooling elements in a cool, dry place away from direct sunlight. Ensure the elements are clean and dry before storage.

A detailed view of the vest's polyester fabric and front zipper, showing the material texture and construction.
Troubleshooting
Issue: Cooling effect is shorter than expected.
Solution: Ensure the MCP elements were fully solidified before use. Higher ambient temperatures and intense physical activity can reduce the effective cooling duration. For extended cooling, consider using C28 elements (if available) or having multiple sets of C24 elements for rotation.
Issue: Vest feels uncomfortable or does not fit properly.
Solution: Adjust the shoulder and side straps to achieve a snug yet comfortable fit. The vest is designed with adjustability to accommodate various body sizes and ensure optimal contact for cooling without restricting movement.
Specifications
| Brand | BERTSCHAT |
| Model Number | [FR]8720254516141 |
| ASIN | B095722ZT8 |
| Material | Polyester |
| Cooling Element Type | C24 (approx. 24°C / 75°F, 2-6 hours duration) |
| Adjustability | Adjustable at shoulders and sides |
| Closure Type | Zipper |
| Sleeve Type | Sleeveless |
| Age Range Description | Adult |
| Care Instructions | Hand wash only, Machine wash, Dry clean only (refer to product label) |
Warranty and Support
For detailed warranty information or product support, please refer to the documentation included with your purchase or visit the official BERTSCHAT website. You may also contact BERTSCHAT customer service directly for assistance with any product-related inquiries.