SIS (Science In Sport) Powder Hydro+ 20x4.3g BerrySIS Hydro+ is a science backed hydration powder designed to optimise fluid absorption and electrolyte balance during and after exercise. Each sachet delivers a precise blend of sodium, potassium, and carbohydrates to support endurance performance and recovery. The berry flavour makes it palatable for extended training sessions. With 20 sachets per box at 4. 3g each, it's convenient for athletes who demand consistent, effective hydration support.