Targeted weather protection, down’s warmth, stretch freedom – you pull it on for the hike, you end up wearing it all day. Hybrid Mapping Technology puts a PFAS-free GORE-TEX fabric on the body and sleeves. Breathable Fortius 1.0 softshell on the back and under the arms adds ventilation and stretch. The responsibly sourced 750-fill goose down is placed in box-wall baffles to maximize its efficiency, and low-profile PrimaLoft synthetic insulation is used in the side panels.