We layer this slim-fitting vest over a tee or under a jacket before we hit the road in chilly weather. We filled it with 800-fill-power goose down and PrimaLoft® insulation to keep us warm, even when we get a little damp. Water- and wind-resistant Stretch Glyde fabric help fend off the elements so we stay in our element. 800-fill-power goose down 800-fill-power goose down provides lightweight warmth featherlight insulation heat retention Primaloft® Lightweight Primaloft® insulation has great heat retention, making it the perfect choice for cold, wet weather heat retention lightweight warmth Stretch Glyde Stretch Glyde fabric is water-resistant water-resistant stretch