Hi. For context, I'm working on my first game in Unity. It's going to be a platformer with a character called Patzu. (WIP Model in Blender is seen below) [Front View] https://imgur.com/Y9xNFTE [Side View] https://imgur.com/HLxseQY However, when I limported the WIP into unity, there were three areas where polygons became invisible. Those were the hat, the limb part, and the foot. [Foot View in Unity] https://imgur.com/vrJM8Kf [Hat View in Unity] https://imgur.com/xz2g6bk Is there any way to fix this issue I've had, and does it involve Blender 2.79 (the version I work with), Unity, or both?