Personalized Gym Is Great Youth T-Shirt. Gym is great. It's better than chocolate cake in rough text with a slice of cake is a funny distressed design to brighten the day of gym teachers, body builders, athletes and fitness gurus. 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.