Personalized Sealed With A Kitty Youth T-Shirt. Youth T-Shirt - Kelly Green with a canceled postage stamp, a kitty cat and paw prints, says SWAK, SEALED WITH A KITTY. Perfect for cat lovers on Valentine's Day. 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.