The FROG Combat shirt is sewn to the specifications of the US Navy Fire Resistant Organizational Gear (FROG) program. It is made with Tenecate Defender-M™ flame-resistant fabric. This version in NWU Type II fabric is used by the US Navy. All thread, zippers and loop components are flame resistant. FEATURES TenCate Defender™ M with Lenzing FR® is flame-resistant, fast-drying and comfortable X-Static™ DRIFIRE® reduces core body heat, prevents bacteria growth and provides odor control Made in USA NIR compliant Mandarin-style collar can be worn up or down Quarter-zipper front Gusseted underarm increases range of motion Contoured, reinforced elbows Raglan sleeves for better range of motion Two upper-arm pockets with loop-facing patch for insignia Adjustable buttons at sleeve cuffs