Keep Athletes Safe and Coaches Informed with the Kestrel Heat Stress Flag Kit: The Must-Have Tool for Athletic Trainers

Keep Athletes Safe and Coaches Informed with the Kestrel Heat Stress Flag Kit: The Must-Have Tool for Athletic Trainers

As temperatures rise during the summer months, athletic trainers and coaches face the challenge of keeping athletes safe during practices and games. Heat-related illnesses can be dangerous and even deadly, and taking precautions to prevent them is essential. The Kestrel® Heat Stress Flag Kit enables athletics trainers to quickly and effectively communicate safe environmental conditions during practice or games.

The Kestrel Heat Stress Flag Kit includes color-coded flags corresponding to the Wet Bulb Globe Temperature (WBGT) zones -- allowing ATs to display when it's safe to train and when to take precautions to prevent heat-related illnesses.


The Kestrel Heat Stress Flag Kit is portable and easy to use, making it perfect for outdoor events and practices. Simply raise the appropriate colored flag to indicate the current WBGT zone and inform coaches and athletes of the appropriate safety measures.

What is Wet Bulb Globe Temperature?

Wet Bulb Globe Temperature or WBGT index takes into account temperature, humidity, and sunlight, which can all affect the risk of heat-related illness. The wet bulb globe temperature (WBGT) index is the gold standard for assessing these risks, and it's used by military, occupational, and sports medicine communities to guide training and other activities. Typically, the WBGT index is measured at a single location near the planned activity to get a real-time assessment of heat exposure.

The Kestrel 5400 Heat Stress Tracker calculates WBGT providing athletic trainers and safety professionals with real-time data on the risk of heat stroke and other heat-related illnesses. With its durable design and easy-to-use interface, this heat stress tracker is ideal for sports, outdoor events, and any situation where monitoring environmental conditions is critical to safety.


The Kestrel 5400 Heat Stress Tracker set up at multiple points along the race route at the 2023 Boston Marathon. Medical teams rely on the Kestrel 5400 to monitor race day conditions and runner safety.

The Kestrel Heat Stress Flag Kit

The Kestrel Heat Stress Flag Kit acts as the perfect companion to the Kestrel 5400 Heat Stress Tracker. ATs can raise the flags to quickly notify coaches and admins of the current WBGT zone – wherever they are on campus.

The Kestrel Heat Stress Flag Kit also includes a durable carrying case to keep the kit organized and protected. The flags are made of high-quality materials and are built to withstand outdoor use in a variety of weather conditions.

Overall, the Kestrel Heat Stress Flag Kit is an essential tool for any athletic trainer who wants to ensure the safety of their athletes during hot and humid conditions. By using the kit to monitor and communicate safe environmental conditions, trainers can help prevent heat-related illnesses and keep athletes safe and healthy.


The kit includes different colored flags corresponding to the Wet Bulb Globe Temperature Zones (WBGT), making it easy to indicate safe or unsafe heat conditions for athletes.

This Flag Kit includes a 6'4" telescopic flagpole, ground stake, five 2'x3' Heat Stress zone flags (in colors white, green, yellow, red, and black), and a portable travel bag. With this Heat Stress Flag kit, you will have everything you need to correctly convey current WBGT heat stress zones to prevent heat-related illness. The included bag can also fit your Kestrel 5400 WBGT Heat Stress Tracker and a standard tripod.

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