Scary Costumes - Great as a King Kong costume! Child Gorilla Costume includes the mask, jumpsuit and hands. This Gorilla Animal Costume is wonderfully hairy and scary! The Child Gorilla Costume is available in child sizes Small, Medium, and Large. The Child Gorilla Animal Costume is 100% Polyester. Hand wash cold water. Line dry. No bleach. NOTE: The mask (headpiece) is really quite large. It is meant to be oversized and scary. The face is grey, the eye holes are small, the mouth is closed. The mask is very flat, not 3D like it is in this picture. Full mask.