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On sites like GitHub, the actual file is often hidden under the "Releases" section on the right side. Datei herunterladen Fabric_Formation_Effect_V3 ...
If this is a material preset for software like Blender or Marvelous Designer, check your "Library" or "Purchases" on the site where you originally saw the effect. Datei herunterladen Fabric_Formation_Effect_V3 ...