Personalized Wavy Swim Youth T-Shirt. Swim in wavy blue text is a fun gift design for swimmers and swim coaches for back to school, birthdays, holidays and swim season. 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.