Depending on your requirements, you can allow external light to flood in, or, alternatively, maximise your privacy and reduce exterior noise. (appealshading.com)
The level of exterior noise is very minimal and road noise even with run flat tires is still at a minimum. (autolist.com)
While the headset does a decent job of stopping the music you're listening to from escaping, it doesn't do a great job of keeping exterior noise out. (techradar.com)