The Endura Rehydration Performance Fuel in Lemon Lime flavor appears to be a hydration product designed to replenish electrolytes lost during exercise or physical activity. Its lemon-lime flavor might provide a refreshing taste, making it more enjoyable to consume during workouts. On the other hand, the Endura Smart Shaker is a BPA-free protein shaker with compartments for storing additional powders, pills, or tablets. Its stainless steel mixing ball ensures smooth blending of ingredients, and its 600mL capacity makes it suitable for mixing and carrying various types of drinks or supplements. Both products seem to offer practical solutions for athletes and fitness enthusiasts to support their hydration and nutrition needs during training or competitions.