This is a first-flush matcha, which has the most chlorophyll, amino acids (especially L-theanine), and antioxidants.
Matcha is commercially graded from 1A to 6A to better understand its quality. Generally, the more A's a matcha has, the brighter and richer green its color, the smoother its taste with more umami and less bitterness; lower quality matcha is paler, yellower, more bitter, and rougher. 5A matcha is bright green and creamy.
Bonus Tonus matcha naturally boosts energy, enhances focus, and helps manage stress.