Shark Tank: Season 8, Episode 11

8 - 11: An Entrepreneur Who Works with Santa to Reply to Children's Letters, 83-Year-Old Ironman Triathlon Competitor, Profile of Billionaire Mark Cuban

An entrepreneur works with Santa Claus to reply to children's letters to the North Pole; an 83-year-old Ironman triathlon competitor and his business partner present a more functional winter glove; a profile of billionaire Mark Cuban.