Lululemons lightest weight insulation and versatile layering for changing weather and active living. Lightweight with 700-fill-power goose down for for base warmth. Windproof and water resistant. Four way stretch, breathable tech fleece fabric is DWR-treated to protect you from the elements. PrimaLoft insulation is warm even when wet. Measures approx. 17in put to pit and 25in long.