Sugoi Women' S Zap Light Vest Body : 100% Polyester / back vent : 100% Polyester / collar, CF placket : 100% Polyester Imported Reflective flatlock and trim detail for low light and night time visibility Woven ripstop fabric for protection and ventilation Mesh panel on the back of the vest for increased airflow 1 zip back pocket for storing run essentials Reflective flatlock and trim detail for low light and night time visibility