High 5 ZERO the new great tasting electrolyte drink from High 5, now comes with a caffeine kick (65mg) -about the same as a mild cup of coffee. It’s virtually calorie free (1.4 calories per 100 ml) & is designed for optimal hydration both during & after exercise & to provide a stimulant boost when you are flagging to help focus, & concentration. ZERO X’treme is also a great way to get hydrated & give you a boost before a session when you are tired & don’t feel up to it.ZERO X’treme can be an essential part of your anti cramp strategy as cramp has been linked to both dehydration & electrolyte imbalance. X’treme contains; sodium, potassium, magnesium & calcium.ZERO X’treme is perfect for runners, cyclists, hikers, the gym, pro athletes, footballers, racket sports or anyone who wants to stay active, alert, focused & hydrated.