Under Armour Evo Coldgear Compression Mock Moisture Transport System - Wicks sweat away from the body leaving you cooler and fresh. Anti-Odour Technology - Prevents the growth of odour causing microbes. 4-Way Stretch Fabrication - Allows for greater mobility in any direction. Flat-lock Seams - Helps to reduce irritation caused by chaffing. Updated Neck - Provides an ergonomic fit for maximum comfort.