# ParticleSystem.Trails

> Script interface for storing the particle trail data.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public struct ParticleSystem.Trails
```

## Remarks

Additional Resources: [ParticleSystem](/engine/6000.5/script-reference/unityengine/particlesystem.md), [ParticleSystem.GetTrails](/engine/6000.5/script-reference/unityengine/particlesystem/gettrails.md), [ParticleSystem.SetTrails](/engine/6000.5/script-reference/unityengine/particlesystem/settrails.md).

## Properties

| Property                                                                                  | Description                                 |
| ----------------------------------------------------------------------------------------- | ------------------------------------------- |
| [capacity](/engine/6000.5/script-reference/unityengine/particlesystem/trails/capacity.md) | Reserve memory for the particle trail data. |