Trick or Treat Studios and HBO are proud to present the officially licensed game of thrones sons of the harpy mask. Based on hundreds of onscreen and behind-the-scenes images and personally approved by the producers at HBO, this mask is an exact replica of the sons of the harpy masks. This amazing mask is made out of resin and is padded on the inside for perfect comfort and fit.so get yourself our game of thrones sons of the harpy mask and hunt down the mother of dragons. Game of thrones. 2016 home box office, Inc. All rights reserved.