When you work out longer than 90 minutes your body needs more than just water and electrolytes. Fuel up with Nuun Endurance to keep you hydrated and train harder all day long. The use of efficient carbohydrates and complete electrolytes will maintain your fluid balance as well as improve muscle function. Made with flavors sourced only from organic ingredients so you can trust what you fuel with. Not only are natural flavors a priority but the Endurance energy drink is also ensured non-GMO Kosher vegan and gluten-free. Being well-hydrated is the key to good performance.