HeatGear, cool to the core. With superior quick-drying properties, stretch that responds to intense movement, and a light, supple feel like a feather, it supports athletes' performance even in harsh heat. The origin of Under Armour's performance apparel. Mesh material is used in the paneling to enhance breathability. Mesh media pocket on the right side. HEATGEAR ARMOUR: Keeps you cool and dry even in extreme heat with sweat-wicking, quick-drying fabric and excellent stretch. 4-way stretch: Excellent stretch in four directions, allowing for smooth movement in all directions. Moisture Control: Quickly absorbs and wicks away sweat, keeping athletes' bodies dry at all times. Odor reduction