Protect your core without overheating. This lightweight vest has a breathable back for ventilation, and packs into its own pocket for easy storage. glyde Glyde fabric is wind- and water-resistant wind-resistant water-resistant features Designed for: Training Ventilation: Back vent strategically placed to provide airflow Packable: Packs into hand pocket for easy storage Customize your look: Cinchable hem Secure storage: Zippered exterior pockets with a hidden phone sleeve