I thought this would be interesting for people interested in how isolating the headphones are. I put an acoustic noise source in our isolation chamber and then measured the chamber noise with and without the headphones, the graph is the difference. You can see noise blocking starts at 100Hz, by 1K noise is reduced roughly 16-17dB, by 2.5K ~23dB, which is better than many ear plugs on the market.
For myself, I find this to be incredibly effective on airplanes as it does a great job with blocking conversations, ventilation noise, and most importantly babies. For myself I prefer to travel with my Mojo 2 and the NOIRE X vs ANC, though of course there are great arguments to prefer ANC, depending on your priorities.