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Built for riders and trail runners who want hydration without the bulk, the Osprey Raven 4 features an AirScape™ Lumbar Backpanel that actually fits right and a 1.5L reservoir to keep you sipping mile after mile. At just 4L, it's lean but loaded—think tool-roll organizer, helmet-carry straps, and hipbelt pockets with enough space for the essentials.
Main – bluesign™ approved 100% recycled 210D bird dobby nylon, DWR treatments made without PFAS
Bottom – bluesign® APPROVED, 100% recycled 420D nylon, DWR treatment made without PFAS
7.9H X 16.1W X 6.3D IN
Osprey Hydraulics® LT 1.5L Reservoir Included – An Osprey Hydraulics® LT 1.5L or 2.5L reservoir keeps you hydrated all day long and stores in an external hydration compartment to protect pack contents from accidental spills.
Separate Compartment with A Removable Tool Roll
Large Zippered Main Compartment with Reservoir Sleeve
Internal Goggle Pocket and Pocket with Key Clip
Dual Zippered Hipbelt Pockets – Provide secure storage for often needed items.
Stretch Mesh Front Pocket
AirScape™ Lumbar Backpanel – Mesh-covered, 50% recycled EVA foam on an Atilon back panel frame sheet allows dynamic body movement and maximum ventilation while keeping the load close to the body.
Hipbelt – Spacer mesh hipbelt provides stability and breathability while the ErgoPull waist strap closure system allows for a proper, snug fit.
Helmet Carry – Includes Osprey's LidLock helmet carry for traditional helmets and front panel upper compression straps for full face helmets.
Secure Routing for Reservoir Hose Behind the Hip Pocket for Extra Security
Dual Side Compression for Stability
Blinker Light Attachment
Reflective Details for Safety