Softie parachutes indicates that the effectively risk free bail out conditions are 1000ft AGL and 100MPH, with a lower speed requiring more altitude. They don't

Softie parachutes indicates that the effectively risk free bail out conditions are 1000ft AGL and 100MPH, with a lower speed requiring more altitude. They don't specify a max speed, but it's worth pointing out that 100MPH is pretty slow comparatively.