The reebok endurance hydration backpack is perfect for endurance activities as it combines solidity waterproof characteristics and comfort get all your essentials inside and be ready for your long distance run being sure you have everything you need with you the backpack offers a large main compartment with 5 internal pockets and a hydration sleeve with zips for secure storage of all your essentials thanks to the easy access side pockets you can keep your valuables and snacks always at hand