The body and hood are fully lined with high-pile sherpa fleece, which traps heat well. For deep-winter cold, add a sweater underneath and zip it to the chin.
The cut is relaxed through the chest and shoulders with room for a layer underneath. If you prefer a closer fit, stay with your usual size rather than sizing up.
Machine wash cold on a gentle cycle, turned inside out, and hang to dry. Skip the dryer and the iron — heat is what flattens a fleece pile.
Both hand pockets close with zippers, so small items stay put when you bend or drive. Zip them before washing so the pulls don't snag the pile.