Personalized Biology Text Flower Youth T-Shirt. Biology text with flies and beetles arranged in a flower pattern is a unique gift design for entomologists, biologists, teachers and students at back to school, birthdays,holidays and graduation. 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.