These shirts combine great value with the high quality you expect from WSI®. Ideal for use as a casual performance shirt. Microtech™: 100% PolyesterThe lightweight Microtech™ fabric offers comfort and style. Our Microtech™ fabric features Anti-Microbial, Anti-Snag, and superior Moisture-Wicking technology. The Anti-Microbial technology helps cut down on body odor while the Anti-Snag technology works to prevent snags better than our competitors' performance shirts.