evo.com | Osprey Hydration Packs > The Osprey Raven 10 Hydration Pack was engineered for those who demand the ultimate in mountain biking performance. This fully-loaded trail companion delivers uncompromised functionality and organization for serious all-day, all-mountain sessions when nothing but the best will do. LidLock Bike Helmet Attachment Main bluesign(R) approved 100% recycled 210D bird dobby nylon, DWR treatments made without PFAS. Scratch-Free Heat-Embossed Zippered Slash Pocket 8.5H X 8.3W X 16.9D in Hydraulics LT 2.5L Reservoir Included | Osprey Raven 10 Hydration Pack 2026 in Brown | Nylon