I have used this Hit Air vest on the track for 2 seasons. You have to remember to connect the tether to the bike every time you ride. SInce the tether is in the back, you can forget, but it also makes it so the tether is unnoticeable once you are riding.I finally had an accident while using the vest. It was a low side at Mid-Ohio at moderate speed. The airbag performed as expected and my head never even hit the pavement.However, the airbag part of the vest tore as I slide along the pavement. It is not repairable. So, it's a one-time use item. This is my only reason for not rating it 5-stars.It comes with a back protector inside the vest, which is redundant if you are wearing a back protector under your suit. I remove the one in the vest, which makes it easier to fit. When the back protector was in, the vest was very tight on my chest, and I wear a 40L suit jacket.
