Aston Martin DB11 Owner's Handbook Manual page 193

The roll-over protection system has electronic sensors mounted
to the vehicle body that monitor and determine if a roll-over has
taken place. If the system senses a rollover, two roll bars mounted
under trim panels in the tonneau lid, will deploy to protect
vehicle occupants.
If the roll-bars are deployed the door mounted airbags will
also be deployed to further protect vehicle occupants.
Warning Labels
Do Not Cover is embossed into tonneau cover above the roll
bars.
11.5
Convertible Roof