Thule Vital 3L hydration backpack is lightweight and expertly designed, with a 1.75L Hydrapak reservoir perfect for 1-3 hour rides. Stay hydrated without slowing down using the hands-free ReTrakt magnetic hose return system. Quickly access nutrition, clothing or tools while riding without having to stop or remove the pack thanks to convenient jersey-style pockets. Improve bike handling and reduce muscle strain with optimal weight distribution thanks to the low centre of gravity. Stay hydrated on fast 1-3 hour rides with a 1.75L Hydrapak reservoir. Carry extra food, clothing and tools with minimal bulk in 3L cargo storage. Maximize uphill and downhill performance with the lightweight, ventilated materials. Secure your phone, keys or other small essentials in the interior zippered pocket. Stay visible in low light with tail light attachment. Stabilize and increase comfort on any terrain with a sternum strap.