Ultralight, highly packable – it stuffs into its own pocket – and designed for mountain runners, the Norvan Insulated Vest is a go-to for high output in colder conditions. The 40gsm Coreloft™ insulation combines warmth, breathability, and compressibility. Fortius™ Air 20 face fabric allows airflow for climate control and has a DWR finish to repel moisture. Stripped to the essential, the minimalist design has a streamlined fit that moves with you and layers comfortably under the Norvan GORE-TEX shell.