# Sandbox.Package.ClothingMetaData.SteamItemDefinitionId

```csharp
System.Nullable<int> SteamItemDefinitionId { get; set; }
```

The Steam item definition id this clothing maps to, if any.

Declared in [Sandbox.Package.ClothingMetaData](/api/Sandbox.Package.ClothingMetaData).
Assembly: `Sandbox.Engine`.