From the Bog Dog team:
Meet a half zip that delivers a whole lotta protection. Coated with a water-resistant finish to shield from the elements, Hoka have lined the woven outer material with soft micro grid back fleece and paneled in stretch knit through the arms and sides for maximal movement. Equipped with internal mitts to keep you warm when logging those crack-of-dawn miles, we’ve enlisted a two-way zipper for ventilation. You’ll also find a stealthy chest pocket to secure keys/cards and back pocket for stashing discarded beanies