---
title: springStiffness
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/clothbodymaterial/springstiffness
---

# springStiffness

The resistance to compressing and stretching between adjacent particles.

## Declaration

```swift
var springStiffness: Float { get set }
```

## Discussion

Discussion The valid range is [0.0, 1.0], both included. Values outside the valid range are clamped. The default value is 1.0.

## See Also

### Configuring stiffness and damping

- [bendStiffness](realitykit/clothbodymaterial/bendstiffness.md)
- [crossTetherStiffness](realitykit/clothbodymaterial/crosstetherstiffness.md)
- [laplacianDamping](realitykit/clothbodymaterial/laplaciandamping.md)