PolyRoute is one of GLMZ's dominant last-mile delivery networks, and the Weathershell is what their drivers wear through the city's full meteorological range — acid-tinged lake squalls, the deep cold of Great Lakes winters, and the wet heat that settles over the megacity's lower districts in summer. The jacket is a three-layer construction: an outer shell of hydrophobic ripstop that sheds water and resists the mild chemical content of GLMZ's precipitation, a thermal-regulating mid-layer that adjusts insulation based on exertion level, and a moisture-wicking inner face. The exterior is a medium grey with PolyRoute's route-arrow logo in orange at the chest and back, and high-visibility retroreflective striping along the sleeves.

A GPS-conductive thread network runs through the jacket's left sleeve, connecting to a wrist-worn routing display that pulls live delivery manifests, traffic data, and route optimization from PolyRoute's logistics AI. The jacket includes a chest-mounted scanner holster for package verification hardware. BCI-compatible collar port allows hands-free navigation for drivers with neural interface setups. The Weathershell is geneware-tolerant at the back and waist — tail accommodation gussets are standard, and the hood has adjustable side clearance for ear configurations. PolyRoute drivers are contractors, not employees, which means the jacket is technically a rental deducted from earnings — a financial arrangement that generates significant resentment among the workforce.