This ultimate enduro rail hydration backpack combines the Thule ReTrakt tube, a secure fit and Koroyd back protection for the optimal backpack for every ride. The jersey pockets at the bottom of the back provide easy access to food, clothing or tools without taking the backpack off. Improved bike performance and less muscle strain thanks to optimum weight distribution and low centre of gravity. Protect your lower back and spine from bumps and injuries with the removable, lightweight and CE certified Koroyd Level 1 back protector. The user-friendly 2.5L HydraPak hydration bladder features a sliding closure for easy cleaning and a lockable bite valve to prevent leaks before and after riding.