This Traveler suit separates vest, powered by 37. 5copy Technology maintains the optimum microclimate for your body. 37. 5copy Technology removes moisture at the vapor stage before sweat can form. 37. 5 Technology acts like a thermostat by removing moisture when you are hot and retaining warmth when cold. 37. 5 Technology also absorbs and traps odor molecules that are washed away when cleaned. Suit separates allow you to choose coat, pants and vest sizes separately for the perfect fit. br Matching Jacket 3XWPbr Matching Pants 3XWD Traveler Performance Collection Tailored Fit Suit Separates Vest