Personalized Invincible Techie Youth T-Shirt. IT invincible techie is a humorous gift design for computer geeks, programmers and IT personnel at birthdays, holidays and graduation. 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.