The Rainrunner Pack Jacket is a 2.5-layer laminated shell built for running in serious weather, offering 20,000mm waterproof and 20,000g/m²/24hr breathability ratings with fully taped seams. Constructed from a lightweight ripstop fabric treated with PFC-free C0-DWR, it resists water without sacrificing packability or mobility. The ergonomic silhouette features 360° panel venting around the core, a fitted scuba hood with 180° visibility, and a self-stowing design with an integrated elastic carry strap for easy transport.