Details Layering season. The secret to this surprisingly warm vest is our signature BisonShield(TM) insulation, made with salvaged bison wool that we intercept from the waste stream. Equipped with an extra cozy sherpa-lined hood and a weather-resistant recycled polyester shell that keeps you comfortable while keeping old plastic out of landfills. To avoid microplastic shedding in the wash, we recommend using a Guppyfriend Washing Bag 100% recycled polyester, BisonShield(TM) insulation Agnes is 5&';9" wearing a size S Machine wash cold, tumble dry low Made with love in China