>If you have the money, zero/zero ballistic parachutes have been a reliable thing for more than half a century.
That's called an ejection seat, right? As in a rocket-propelled vehicle to launch you sufficiently high out of your aircraft to allow your parachute safely to deploy (i.e. about a hundred meters, as described in the prior post)
I'm unaware of any of those which are zero-zero. The Cirrus CAPS system has a minimum altitude of 400 ft or 920 ft after a one-turn spin, for example. BRS doesn't make specific claims for their system as far as I know but I'd be amazed if it were that much improved over the Cirrus one.
