Helite E-Turtle Air Airbag Vest (Black) & Sensor Kit da  £712.49

The E-turtle was sized a bit larger than expected and I believed they were in the process of reviewing the sizing advice when I bought it. Visorshop was proactive in helping me get it right before delivery.
I don't really feel it when I'm wearing it and if I forget to turn it on, I found I can check this easily in my right mirror if I lean over a little bit. Well located button and LED. I have accidently forgotten to turn it off a number of times. It must go into a battery saving mode when it is motionless because I've got a lot more than 50hrs on one charge so far. If you want a wear rain jacket over this, it will add at least one size.
I haven't crashed yet so can't comment on crash protection.

Great service, fast delivery