Gravelight Coldwalk Helmet

Gravelight’s coldwalk helmet grows a temporary inner visor from clear aerogel foam. Press the purge stud, wait five seconds, and a fresh insulating layer spreads across the faceplate, filling scratches and pushing frost aside. Each cartridge provides six renewals. The helmet’s pale ceramic crown reflects reactor glare and carries a low-light camera in a protected brow. Outside, it resembles a smooth stone with a human face buried inside. Inside, breath sounds close and strangely dry. The aerogel becomes brittle after radiation exposure; tapping the visor to test it is discouraged. People tap it anyway. If it falls like snow inside the helmet, return to pressure immediately.