Iron Man Party Supplies - Iron Man Invitations & Thank You Notes - 16 Count Invite guests to help Tony Stark and your birthday star create a new suit for Iron Man! Perfect for your Tony Stark Avengers Birthday Party Our Iron Man Invitations & Thank You Notes are the perfect way to start and end your party. Eight party invitations feature Iron Man and a cool "Guest Pass" on the front with lines to fill in the party details on the back. Eight thank-you postcards say, "Thanks! You helped make my party invincible!" with a blank reverse for your personal message. Envelopes are included for the invitations.