SIS GO Hydro Tablets offer effective hydration with just 9 calories per serving. Ideal for adding to a 500ml bottle during workouts, they replenish essential electrolytes lost through sweat. These tablets meet sodium needs at a concentration of 30mmol/L, scientifically shown to hydrate better than water alone. Originally developed to keep the British Sailing team well-hydrated during the 2008 Beijing Olympics. SKU: SIS GEH TB BE 131122.