size
Android
```kotlin
public fun SubspaceModifier.size(size: Dp): SubspaceModifier
```
Declare the preferred size of the content to be exactly a [size](/jetpack-compose/androidx.xr.compose/compose/functions/size) dp cube. When applied to a
Panel, the preferred size will be a [size](/jetpack-compose/androidx.xr.compose/compose/functions/size) dp square instead.
size
Android
```kotlin
public fun SubspaceModifier.size(
width: Dp = Dp.Unspecified,
height: Dp = Dp.Unspecified,
depth: Dp = Dp.Unspecified,
): SubspaceModifier
```
Declare the preferred size of the content to be exactly [width](/jetpack-compose/androidx.xr.compose/compose/functions/width) dp along the x dimensions,
[height](/jetpack-compose/androidx.xr.compose/compose/functions/height) dp along the y dimensions, and [depth](/jetpack-compose/androidx.xr.compose/compose/functions/depth) dp along the z dimension.
size
Android
```kotlin
public fun SubspaceModifier.size(size: DpVolumeSize): SubspaceModifier
```
Declare the preferred size of the content to be exactly [size](/jetpack-compose/androidx.xr.compose/compose/functions/size) in each of the three dimensions.
Panels have 0 depth and ignore the z-component of this modifier.