From the Vital Tea website:
Aged black tea. 8 to 9 years. Very woody and earthy in flavor good for digestion. Very smooth. A Premium old tree black tea leaf Pu-erh. Taste smoky and earthy, high in caffeine, strong black tea. Good for digestion, upset stomach, constipation, and acid reflex. This tea has been aging for 10 to 12 years. This is the type of teas you could age longer you like in any type of temperature and weather.