The brand new All-Trac™ outsole rubber compound provides flexible, true all-weather grip that significantly aides in overall traction on all kinds of surfaces. The zonal Primaloft® Insulation package uses a high-quality microfiber thermal insulation system to mimic the warmth-providing properties of down, keeping you warm without retaining water. The new HydroGuard 360° keeps a high waterline for maximum water resistant protection, resulting in reliable, comfortable, breathable fit.