The WHACKK Marathon Running Backpack is designed to keep up with your pace, featuring a pocket perfect to keep the hydration bladder upto 2l capacity, and innovative shoulder straps that allow the hydration pipe to pass through from either side, making it perfect for both left- and right-handed users. It includes specialized pockets on the shoulder straps and front for essentials like napkins, phones, energy bars, and earphones, ensuring hands-free convenience. Adjustable chest straps with buckles provide exceptional comfort. Stay prepared, stay hydrated, and stay focused with the WHACKK Marathon by your side!