Details Layering season. The secret to this surprisingly warm vest is our signature BisonShield™ insulation, made with salvaged bison wool that we intercept from the waste stream. Equipped with a weather-resistant recycled nylon 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 nylon, BisonShield™ insulation Machine wash cold, tumble dry low Made with love in China
