TRU-SPEC undergarments manufactured from CORDURA brand Baselayer fabric provides a layer of comfort and protection next to your skin that no police officer, fire fighter or soldier can afford to be without. In addition to an unsurpassed feel, the ultra-soft 60/40 cotton/nylon jersey knit provides multiple advantages over either cotton or polyester. Breathability and exceptional moisture wicking ability that absorbs moisture much more quickly than 100% cotton and dries 2.5 times faster than 100% cotton Won't melt or drip like polyester Helps protect against flash fires and reduce burn injury severity by charring CORDURA BRAND BASELAYER SHIRTS MEET THE REQUIREMENTS OF NFPA 1975-2009 FOR STATION AND WORK UNIFORMS FOR EMERGENCY SERVICES. FreshFX fabric technology provides lasting freshness Greater strength-to-weight ratio than cotton and exceptional abrasion resistance, CORDURA brand Baselayer fabric is much less susceptible to holes, tears and snags Constructed from no melt, no drip 60/40 cotton nylon CORDURA baselayer jersey knit fabric FlatLock Construction To Reduce Friction Ribbed Knit Mock Neck Collar With Double Needle Cover Stitch Heat Transferred Inner Tag Offset Shoulder Seam To Minimize Abrasion & Seam Stacking Double Needle Cover Stitch Seam on Sleeves & Bottom Imported