Marvel Avengers Gel Pen & Bookmark Set ~ Captain America, Thor, Hulk, Iron Man and More! Marvel Avengers Gel Pen & Bookmark set. Featuring features Avengers favorites; Captain America, Thor, Hulk, Iron Man and more! Retractable gel pen with black Ink. Contoured rubber grip for writing comfort. Gel ink is smooth writing and smear-proof. Colorful bookmark features Avengers favorites; Captain America, Thor, Hulk, and Iron Man. Officially licensed Marvel Avengers product. Perfect for home, school or office. Sure to be a hit with any Avengers fan!