At last. A protective undershirt made with lightweight padding to protect the heart, ribs and kidneys. Cool Microtech fabric wicks away moisture keeping you comfortable and dry. Designed as a protective undershirt, the Heart and Kidney Protector is made of Microtech fabric. Versatile, lightweight padding helps protect the player from unexpected heart, rib and kidney injuries. These shirts combine great value with the high quality you expect from WSI. The 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. Ideal for use as a base layer or casual performance shirt. 100% MADE IN THE USA.