Thermal Relief System
Temperature management for body armor
$59.99
Out of stock
The Thermal Relief System (TRS) is a portable vest-mounted personal cooling device designed to reduce heat buildup underneath duty vests during extended wear. The TRS is built around an integrated high-performance fan and airflow nozzle that delivers cooling air across the torso. The nozzle hangs over the top edge of an external body armor carrier and channels airflow downward behind the vest, dispersing air laterally out both sides as well as directly toward the torso to provide optimal cooling, helping reduce trapped heat and prevent excess moisture accumulation. The TRS can be mounted and dismounted in seconds, giving officers flexibility in how they choose to use it.
The TRS is compatible with both concealed and exterior vests. It can be used simply by tucking the nozzle behind the top of the vest. For users who want additional stability or a more secure mounting solution, optional MOLLE and Velcro clip accessories are available. These allow secure attachment to plate carriers, chest rigs, and other load-bearing equipment while allowing easy installation and removal of the TRS.
System Weight: Approximately 10.5 oz
Speed Settings: 5 selectable airflow levels
Runtime (based on real-world testing):
Level 1: 17 hours
Level 2: 11.5 hours
Level 3: 8 hours
Level 4: 3.5 hours
Level 5: 2 hours
Charging Time: 3 hours 40 minutes
Power Source: Internal 4,000mAh battery, USB-C rechargeable
Florida Officer: I used it today, the temp was 85 degrees in Florida and it worked great. Best thing I’ve bought for work thus far.
Florida Highway Patrol Trooper: I’ve used this for the last two days while working and will be using it again today. The weather here in Florida hasn’t been extremely hot, but I can definitely say this device has helped.
It’s a larger device—almost the size of my iPhone 17 Pro Max—but I really like that it’s portable. I haven’t personally used cooling systems like this in the past, but I am aware of ones that rely on a vehicle’s air vent, and those obviously can’t be taken outside the car. With this one, I can walk around a scene wearing it and stay noticeably cooler than I would without it.
I wear an inner vest for work, and in my opinion it helps cool down quickly that way. If you wear an outer vest, I think it would work best placing it inside your shirt rather than between your shirt and vest.
It has 5 different fan modes, and the setting you use will determine how long the battery lasts. I don’t have the manual anymore, but I believe the lowest setting can last up to around 17 hours, while the highest setting drains much faster.
I 100% would recommend this device. I already have co-workers planning to order one, and I would definitely purchase it again.
Georgia Officer: For its price point, this product performs well and delivers noticeable results. Even when set at a moderate level (3 out of 5), it effectively circulates air and helps dissipate heat reasonably well.
In my experience using it with an under-shirt vest setup (as opposed to an outer vest), the performance remains consistent and beneficial. Pairing it with a Militaur ventilation vest further enhances airflow and overall comfort by reducing heat buildup beneath the vest.
Overall, this is a solid investment for anyone looking to improve comfort in warm conditions.
Questions or support requests should be directed to: support@reasonworks.org
Each unit is inspected and tested prior to shipment to confirm proper operation. All orders are subject to our refund policy.
TRS units come with a 90 day limited warranty against manufacturing defects in materials and workmanship from the date of delivery.
This warranty does not cover damage caused by modification, disassembly, improper mounting, excessive flexing, water exposure, abuse, impact, or any other improper use that goes beyond the purpose of the TRS.