mont-bell / モンベル U.L. Down Jacket / 1101374 Size S This jacket is incredibly lightweight and compact, making it useful throughout the year. It can be used as a mid-layer in the dead of winter, or as an outer layer for spring and autumn trekking or summer mountain hikes, allowing for use depending on the season and field. It has a front zipper, making it easy to use as an outer layer. *Storage bag (stuff sack) is missing.