# Sandbox.ColliderFlags

- Kind: enum
- Namespace: `Sandbox`
- Assembly: `Sandbox.Engine`
- Modifiers: sealed

## Fields

- [`IgnoreMass`](/api/Sandbox.ColliderFlags/IgnoreMass): Collider has no mass, won't affect physics objects it collides with
- [`IgnoreTraces`](/api/Sandbox.ColliderFlags/IgnoreTraces): Traces can never see this collider, no matter what happens