Active noise cancellation (ANC) has been found to be of interest for 71% of consumers planning to buy true wireless stereo (TWS) earbuds. However, the feature does require physical seals and a fit that some users may find less tolerable over time. Qualcomm claims that its new Adaptive ANC solves these problems.
https://www.notebookcheck.net/Qualcomm-s-Adaptive-ANC-might-be-the-next-big-thing-in-TWS-earbud-specs.491529.0.html