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Stay Cool, Stay Visible: Kosto’s New Shirts

Stay Cool, Stay Visible: Kosto’s New Shirts

SPI4/25/2025

Known for its commitment to worker safety and comfort, Kosto unveils two new high-visibility work shirts that mark a turning point in the world of protective clothing. Available in both short-sleeve and long-sleeve versions, these innovative shirts feature advanced 37.5® technology—a breakthrough set to transform the daily experience of workers in demanding environments.

Learn more about our private label Kosto →

Built for Performance, Designed for Comfort
The new Kosto shirts are designed to meet the real-world needs of professionals working in hot, humid, or physically demanding environments. Made from lightweight, breathable fabric, they provide optimal freedom of movement and lasting comfort—even during long work hours. Compliant with the CSA Z96-22 high-visibility standard, they feature 2-inch segmented reflective strips, strategically placed to reflect light effectively from multiple angles while offering enhanced flexibility.


Short Sleeve Work Shirt →

Long Sleeve Work Shirt →


Keep Your Cool, No Matter the Task

What sets these shirts apart is the integration of 37.5® technology directly into the fabric fibers. Developed to enhance thermal comfort, this technology relies on millions of natural active particles that respond in real time to body heat. Their role? To create a personal microclimate by maintaining the ideal temperature and humidity level at the surface of the skin. 37.5® technology quickly wicks away the water vapor generated by sweat, helping the body stay cool and dry—even during the most intense efforts. Unlike other textile treatments that can wash out over time, the properties of 37.5® are permanent, embedded deep within the fibers themselves. The result? A garment that maintains its performance from day one to the last.

Safety and Comfort: A Winning Combination

Kosto offers an innovative solution in a field where safety should never be compromised. By combining high visibility, thermal comfort, and freedom of movement, these shirts represent a new generation of workwear designed to meet the real-world demands of the job. Whether on a construction site under the blazing sun, in a heated factory, or working outdoors during the summer months, workers will appreciate the cool, comfortable feel these shirts provide. Less heat-related discomfort also means better focus and ultimately, greater overall safety.

What It Changes in Your Day-To-Day

With its new high-visibility shirts featuring 37.5® technology, Kosto is redefining the standards in workwear. These garments masterfully combine safety, innovation, and comfort, designed specifically for professionals seeking both performance and well-being. A true breakthrough for all those who give their best every day—often in tough, demanding conditions.

Shop Kosto Products →




SSTI

Founded in 1972, SPI Health and Safety is a Canadian leader in occupational health and safety products and services. SPI supports you in your OHS challenges by offering complete and specialized 360 solutions that include technical equipment and services, consulting services and training. We ship across Canada from our distribution centers in British Columbia, Alberta and Quebec. We offer safety training in BC, QC and Ontario.


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