Goes right through the perimeter strap. I went downstairs and heard him bumping into him repeatedly. Then, at another spot where I was blocking the canteen, it hit the belt directly. My shark was able to go through another entrance and down the stairs to the basement where the door was open. Okay, this isn't the same restrictive tape you get from a shark. It's lighter and I'm not sure if it has anything to do with that. Very disappointed with this band.