It's light, but you wouldn't want to wear it around your neck if you were going to be running... if it pops up and hits you in the nose (or, in my case, my glasses), you'd definitely feel it.
It's light, but you wouldn't want to wear it around your neck if you were going to be running... if it pops up and hits you in the nose (or, in my case, my glasses), you'd definitely feel it.