Personalized 4th Birthday Ice Hockey Sports Party Boys Youth T-Shirt. Fun ice hockey themed fourth birthday Youth T-Shirt - Navy with sports number 4 logo and I'm four quote. 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.