Personalized Big Sister Duck Youth T-Shirt. Big sister duck is protecting her little duckling sibling with an umbrella while they sit in a puddle. Cute gift for any big sis! 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.