Personalized Unicorn Balloons Youth T-Shirt. A cute unicorn with a rainbow mane floats in the air with a bunch of balloons in one hand and a heart in the other. 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.