For all-day rides, we need ultimate hydration, and this pack carries more than enough. With three liters of water in tow, we can ride for hours without pausing for a refill. This backpack holds far more than a day's worth of water; it's packed with a variety of handy cargo options that can securely store extra layers, safety equipment, and even a spare e-bike battery. Specially engineered for a day on our bikes, the back panel was body-mapped to identify the areas that retain the most heat and maximize airflow in those spots. The ventilating mesh harness keeps the pack feeling lightweight so we can keep up our energy for the whole ride.