Personalized Bernese Mountain Dog Mom (Dog Breed) Youth T-Shirt. Worlds Best Bernese Mountain Dog Mom Youth T-Shirt - White is a great gift idea. Stylish pink sports look pet logo. 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.