This safety shirt features 37.5 Technology, a fabric innovation that embeds active particles derived from volcanic sand into the fibers. These particles respond to body heat and humidity, helping workers maintain the ideal core body temperature of 99.5° F and relative humidity of 37.5% (which is where the name originates). The shirt actively works to wick moisture away and dry faster than traditional fabrics. It comes in florescent yellow together with heat-applied segmented reflective taping, which meets the ANSI/ISEA Class 2 Type R standard for hi-vis applications. Available as a short- or long-sleeved shirt.
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