read more Protect your core without overheating. This lightweight vest has a breathable back for ventilation, and packs into its own pocket for easy storage.GlydeGlyde fabric is wind- and water-resistantwind-resistantwater-resistantFeaturesDesigned for: TrainingVentilation: Back vent strategically placed to provide airflowPackable: Packs into hand pocket for easy storage Customize your look: Cinchable hemSecure storage: Zippered exterior pockets with a hidden phone sleeve Lululemon Active Vest