Use Vroid official version ".vroid" extension name. Instructions: 1. Open VRoid Studio 2. On the model selection screen, click on the "Open" button. 3. Browse your device to locate the downloaded "ironclad.vroid" file and select it. 4. Click "Open" to load the .vroid file into VRoid Studio Upon purchase, redistribution or sale of the material even after modifying it is prohibited. It is ok to publish models using this presets. The credit of the creator is not required.