Sadamasa Arikawa (who worked with Eiji Tsuburaya) said that the sculptors had a hard time coming up with a King Kong suit that appeased Tsuburaya. The first suit was rejected for being too fat with long legs giving Kong what the crew considered an almost cute look. A few other designs were done before Tsuburaya would approve the final look that was ultimately used in the film. The suit's body design was a team effort by brothers Koei Yagi and Kanji Yagi and was covered with expensive yak hair, which Eizo Kaimai hand-dyed brown. Because RKO instructed that the face must be different from the original's design, sculptor Teizo Toshimitsu based Kong's face on the Japanese macaque rather than a gorilla, and designed two separate masks. As well, two separate pairs of arms were also created. One pair were extended arms that were operated by poles inside the suit to better give Kong a gorilla-like illusion, while the other pair were at normal arms length and featured gloves that were used for scenes that required Kong to grab items and wrestle with Godzilla. Suit actor Hirose had to be sewn into the suit in order to hide the zipper. This would force him to be trapped inside the suit for large amounts of time and would cause him much physical discomfort. In the scene where Kong drinks the berry juice and falls asleep, he was trapped in the suit for three hours. Hirose stated in an interview "Sweat came pouring out like a flood and it got into my eyes too. When I came out, I was pale all over". Besides the suit with the two separate arm attachments, a meter-high model and a puppet of Kong (used for closeups) were also built. As well, a huge prop of Kong's hand was built for the scene where he grabs Mie Hama (Fumiko) and carries her off.