Wearable Speaker Designs Continue to Evolve

At first glance, wearable speakers are a strange bit of kit. When Bose released their Soundwear Companion in 2017, I couldn't see the use case. But as I age it becomes more obvious. I frequently use captions while watching shows or movies, as I have a difficult time making out the dialogue, particularly if it's sci-fi with technical language. There are also times when I'm doing multi-room tasks, would like to listen to a podcast, but cannot wear headphones as I need to keep an ear out for...