This vest can be worn on its own on days that aren't too cold, or as a layering piece for a long season. OMNI-HEAT: Versatile, lightweight insulation for mild to severe cold. Aluminum dot points reflect and retain body heat, enhancing breathability and warmth. It also has water-repellent properties. Unused COLUMBIA Columbia Birchwood™ Vest Blouson Color: Camel Beige This stylish and functional vest features a military-inspired quilted material with down filling, providing warmth despite its thinness. It's excellent not only for outdoor activities but also for fashionable everyday wear. *Although the tag has been removed, it is new. Columbia US size. Size M, but it runs large, so please refer to the actual measurements. Equivalent to L~XL. It has a relaxed fit, so it can be worn comfortably by those with a larger build, and it's also useful for layering over thick sweatshirts. Length 69cm Shoulder width 43cm Chest width 59cm Only one left for sale. I don't think you'll find it in other stores, so please consider it. Features: Insulation/Cold Protection