Personalized Invincible Techie Dark Products Newborn Layette. IT invincible techie is a humorous gift design for computer geeks, programmers and IT personnel at birthdays, holidays and graduation. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months