I'm not seeing the use case here, and that's probably why the marketing is so vague. There just isn't a solid one. There's really no need for this to control m

I'm not seeing the use case here, and that's probably why the marketing is so vague. There just isn't a solid one. There's really no need for this to control music. AirPods now have touch and voice controls built in. Smart earbuds are a much better solution for audio control than smart clothing that controls dumb earbuds. And if you're getting turn-by-turn directions you'll probably have your AirPods in as well, and you can just ask Siri for updates. That's so much more flexible -- you can ask for so much more than you could via preprogrammed swipes. That pretty much just leaves the use case of haptic notifications for people who don't want to wear a watch / wristband. I think if you care about this you'll at least put on a fitbit during your commute. And that works with all clothing.