Packable, breathable thermoregulation. The Mionn Lightweight Vest is essential for shoulder seasons and city summers. A layer of 25gsm Coreloft insulation provides balanced warmth, and the bio-derived ripstop fabric is treated for water repellency, stretches, and breathes. Chira nylon inserts at the sides improve airflow and have exceptional four-way stretch for improved mobility. Patterning is articulated to remove restriction, and the fit layers easily.