Personalized Irresistible Youth T-Shirt. Irresistible text inside a heart connected to resistors is a humorous electrical design for engineers and electricians at birthdays and 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.