First Endurance Hydration Mix Package type:Single Serving 18% elastane

18% elastane

Also with heel cupping and a high density rubber outsole

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More details: Reach-in hand pockets

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First Endurance Hydration Mix Package type:Single Serving 18% elastanePREMIUM 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