SIS drink mix
When your training demands maximum energy, the SiS Beta Fuel Drink Mix stands in a league of its own. Engineered for long-endurance efforts, it delivers an optimized 80g of carbohydrate per serving. By utilizing a 1:0.8 maltodextrin-to-fructose ratio, it maximizes carbohydrate oxidation while significantly reducing the likelihood of gastrointestinal discomfort. It is the gold standard for marathon and ultra-marathon fueling.