evo.com | Osprey Fanny Packs > With 4 liters of carrying capacity, the Osprey Seral 4 Lumbar Pack is the optimal size for the vast majority of mountain bike rides. Equipped with a 1.5L hydration reservoir, a big zippered main compartment with internal...
Osprey's Seral 4L Hydration Pack provides a minimalist design for mountain bikers looking to carry the essentials on short- to medium-length rides. The main compartment houses a 1. 5L hydration reservoir with room to spare for a multitool and a snack...
Osprey designed their Seral 7L Pack for mountain bikers looking for the minimalist fit of a lumbar pack, without sacrificing hydration or storage space on longer rides. The main compartment holds a 1. 5L reservoir while extra pockets stash maintenance...