A water bladder is a convenient and efficient way to stay hydrated during long walks on the Camino. Choose a bladder with a capacity of 2 liters to ensure you have enough water for extended periods. Look for a design with a wide opening for easy filling and cleaning, a durable and leak-proof construction, and a long, flexible hose with a bite valve for hands-free drinking. Ensure the bladder fits well into your backpack’s hydration sleeve or compartment. Staying hydrated is crucial for maintaining energy and preventing dehydration.