# TableSortLabel A button based label for placing inside `TableCell` for column sorting. ## Props | Name | Type | Default | Description | |:-----|:-----|:--------|:------------| | active | bool | false | If `true`, the label will have the active styling (should be true for the sorted column). | | children | node | | Label contents, the arrow will be appended automatically. | | classes | object | | Useful to extend the style applied to components. | | direction | enum: 'asc'
 'desc'
| 'desc' | The current sort direction. | Any other properties supplied will be spread to the root element. ## CSS API You can overrides all the class names injected by Material-UI thanks to the `classes` property. This property accepts the following keys: - `root` - `active` - `icon` - `desc` - `asc` Have a look at [overriding with class names](/customization/overrides#overriding-with-class-names) section for more detail. If using the `overrides` key of the theme as documented [here](/customization/themes#customizing-all-instances-of-a-component-type), you need to use the following style sheet name: `MuiTableSortLabel`.