This Traveler suit separates vest features a unique fabric technology that maintains the optimum microclimate for your body. Named 37. 5, it removes moisture at the vapor stage before sweat can form. 37. 5 acts like a thermostat by removing moisture when you are hot and retaining warmth when cold. It absorbs and traps odor molecules that are washed away when cleaned. Suit separates make it easy to find your perfect fit. Choose coat, pant and vest sizes separately and say goodbye to alterationsbr Matching Jacket 3XV3br Matching Pants 3XV6 Traveler Slim Fit Suit Separates Vest