It picks up a lot of background noise and movement.

Talk on phone in the car without getting background noise.

Really good at isolating background noise.

These are my go-to headphones when I'm in an environment with any kind of background noise ... mostly being in an airplane or on my motorcycle (I wear a half helmet and have stock pipes on one HD and slip-ons on the other one).

One in particular is so loud, so I need something that no only work as a very good In Ear Monitor, but also a protection to my hearing