. Stay cool under fire. The Tactical Compression HeatGear® T-shirt.. . WARNING! This product is not flame-retardant, never use this Under Armour® product as a substitute for flame-retardant or ballistic protective equipment; Do not wear it when exposed to extreme radiant heat or open flames; Under Armour® products that are not flame-retardant may melt in extreme heat that exceeds 350°—exposure of the skin to fire or flame can cause injury. Ultra-soft fabric for the best in next-to-skin comfort. Lightweight, 4-way stretch fabrication improves range of motion and dries faster. . . Advanced Moisture Transport System to keep you cool, dry, and comfortable. Anti-odor technology prevents the growth of odor-causing microbes to keep your gear fresher, longer. Tactical stealth logo allows you to wear this baselayer under your uniform. 4.5 oz. Polyester/Elastane. Imported.