Contemporary Wardrobe System Core Component. Ultra-fine Merino Wool Brings Natural Comfort And Performance. Breathable, Soft 16.5 Micron Merino Regulates Temperature, Resists Odour, Wicks Moisture. Nylon Core Enhances Durability. Gussets Under The Arms Improve Mobility And Comfort. Shoulder Reinforcements Add Durability And Distinction.