Highest tannin provides strong tea taste and higher antioxidant. With high levels of tannin, catechin and polyphenol antioxidant contents therein will provide health benets for tea lovers as well as benecial for preventing cancer. In addition to polyphenols, high tanninalso contains L-Theanine which is a unique amino acid. L-Theaninewill relaxes your mind but keep your alert.