Has anyone gotten the chest strap bundle?
Or using the same strap that it comes with?
Wondering how comfortable is it, never used one before.
Also, is the main piece of it fairly flat, or does it stick out through your shirt?
I was debating the 235, since 'close enough' would be fine for me on heart rate, but after having used the vivosmart hr, I find that little bump very intrusive on my arm all day, and think I would rather just put on a strap when I'm working out.