subscribers can save Shows or Playlists for offline playback within the mobile app for Android or iOS. 

To save a Show or Playlist offline browse for the Show in the streaming catalog or find your Playlist in the My Playlists section of your Library. Click the download button to the right of the show - then wait for the circle to fill to indicate your downloads are complete.

Access your offline content in the My Library > My Downloads section of the app.