Designed to be worn as a standalone garment or as a base layer under cold weather apparel, the XGO Lightweight Performance Relaxed T-Shirt PH1 features Acclimate® Advance Cooling Acclimate® Dry Moisture Management technology that keeps you cool and dry all day long. An Ag47 anti-microbial finish inhibits the growth of odor causing bacteria, while Clean Seam® construction with rolled shoulder seams eliminates irritation under body armor. With a relaxed fit and UPF 35+ sun protection, this tactical t-shirt is 100% Berry compliant and proudly made in the U.S.A.