It was designed with several layers, each of which protects the trooper against re-entry but also peels off in chunks to create radar "noise" to mask the drop. The inmost "egg" holds the trooper immobile through the drop and is discarded at the trooper's command.
Before discard the capsule, the trooper is wrapped like a mummy against the accelerations, barely able to breathe. Inside the capsule, it is filled with nitrogen.
- Starship Troopers (novel)