The Under Armour REACTOR RUN BALACLAVA features a fitted cut, a hood, and is made of the original Coldgear material, suitable for all sports activities. 4-way stretch technology allows for more mobility in any direction. The lightweight Microthread material absorbs sweat, dries fast, and gives you a natural feeling. Double layer material - the inner brushed surface keeps you warm, the outer layer wicks moisture away and dries fast. The technologies wick moisture away and prevent odours. The thumb holes help prevent heat loss. Highly reflective elements for safe workouts even in low visibility conditions.