XGO technical base layer is designed to meet the demands of the elite U.S. Military and law enforcement personnel. XGO, made with Acclimate Dry performance fabric, has been proven to wick moisture vertically at a rate of three inches in three minutes, faster than any other leading fabric -- branded, treated or polypropylene -- on the market today. In addition, 90 percent of the wicking properties are retained after 50 washings. Each piece of XGO base layer has been treated with scent prevent, an anti-odor, anti-microbial treatment that stops odor before it starts by killing the odor-causing bacteria. XGO shirts are cut to fit under ballistic protection, with enough give to allow an officer to move quickly and comfortably while on the job. Available in four weights, XGO colors include black, white and navy for use under standard law enforcement uniforms.