First Endurance Hydration Mix Charleston Shoe Co. and podium finishers

and podium finishers

Mix with 20–24oz (590–710ml) water and fuel your adventure

Maximum cushioning and comfort that protects the foot

coastal comfort

combining the elegance of ballet flats with the legendary comfort of Birkenstock

First Endurance Hydration Mix Charleston Shoe Co. and podium finishersPREMIUM ENERGY & HYDRATION MIX Our award winning EFS mix has been redesigned to help you train and race like never before. Backed by science and packed with 30g of carbohydrates per serving, the new EFS formula redefines fueling to help you go further, faster. Increases energy & improves performance Clinically effective dose of all 5 electrolytes to prevent cramping & dehydration Isotonic for rapid rehydration Zero Artificial Ingredients