The Men's Nike Heather Gray Washington Nationals Authentic Collection Velocity Performance Practice T-shirt is the perfect way to show your support for the Washington Nationals. Made from lightweight, breathable polyester, this t-shirt features screen-printed graphics that proudly display the Nationals logo. Dri-FIT technology wicks away sweat to keep you cool and comfortable, whether you're cheering on the team at the stadium or practicing your swing in the backyard.