Personalized Swimming Nut Text Youth T-Shirt. Swimming Nut text with a funny acorn nut wearing goggles and flippers is a humorous swimming gift design for swimmers and divers during summer swim season and at back to school, birthdays and winter holidays. 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.