Personalized Don't Tread On Me Youth T-Shirt. Don't Tread On Me. The Gadsden flag, with coiled rattlesnake, symbol of American independence. Great gift for anyone who loves freedom. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.