Enough to drink without slowing down your ride, thanks to the hands-free, magnetic hose return. The included HydraPak 1.75-liter hydration bladder features a bite valve to prevent leaks and a sliding closure for easy cleaning. The flat design provides ample storage space for extra clothing and other small items. The age-appropriate design with zippered pockets allows for secure storage of all personal belongings. This backpack is designed for younger cyclists aged 8 to 12 years with a correspondingly smaller back (optimal fit for heights of 127 to 162 cm). Lightweight materials and a mesh back ensure comfort while carrying in all temperatures.