Personalized Happy Holidays Youth T-Shirt. Happy Holidays! A cute, smiling snowman with a top hat, scarf, and mittens waves to everyone and wishes them Happy 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.