• This product is made with 100% recycled polyester fibers. • Dri-FIT technology helps you stay dry, comfortable and focused. • Stretchy fabric with a smooth face provides a low-friction underlayer. • Invisible thumb loops stay hidden when not in use. • Tight fit gives a streamlined look and feel. • Raglan sleeves eliminate the shoulder seam to help you move freely. • Swoosh design trademark is heat transferred on the center of the chest.