HarmoniQLabs is a company that has an in-house 3D-printing process to make its new TWS earbuds. The OEM claims that the resulting unique shape created is better for prolonged wear and for passive noise cancellation. These new accessories will launch via Indiegogo on July 13, 2020.
https://www.notebookcheck.net/HarmoniQ-Labs-upcoming-TWS-earbuds-are-3D-printed-for-their-comfort-and-acoustics-focused-features.480758.0.html