google-material-design-icons/android/content/markunread/materialiconssharp/black/res/drawable/sharp_markunread_24.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M22,4L2,4v16h20L22,4zM20,8l-8,5 -8,-5L4,6l8,5 8,-5v2z"/>
</vector>