What Our Gearhead(R) Experts Are Saying:"I wore this on a full day of ski touring with a lot of vertical, and it's the first insulated jacket that never made me stop to vent. The dual insulation zones kept my core warm on the skin track without ever trapping heat once my heart rate climbed."There's a narrow window during a big touring day where you're working hard enough to overheat but still cold enough to need insulation, and the Lyngen Thermo100 Active Zip Hooded Jacket is built entirely around that window. We zip it on at the trailhead, climb steadily up a skin track, and never once have to stop and shed a layer, even as our effort ramps up. It's the rare insulated piece that seems to know exactly how hard we're working. That balance comes from a deliberate layout of two different insulation types. A dynamic knitted insulation sits at the body and sleeves for core warmth, while a second, lighter insulation covers the hood and sides where we generate more heat, letting air move through without losing warmth where it counts. The recycled nylon ripstop face fabric blocks wind chill while still breathing, and a beanie compatible hood with chin guard zip means we can bundle up the moment we stop moving.