It has all the bike-centric features you expect in a Dakine pack including helmet carry straps, a breathable backpanel and dedicated storage for sunglasses.Key Features (18L & 10L): High-flow Blaster bite valve w/shut-offand magnetic hose clip Lightwelght, weather-tight construction Alrlite Suspension backpanel Breathable ergonomic shoulder strapsw/ sunglasses quick stash Zippered hipbelt pockets Padded, fleece sunglasses/phone pocket Internal organizer pocketsDeployable helmet carry External carry straps Side compression straps (18L ONLY) Reflective logo Safety light attachment DK Impact Spine protector compatible(not included) Key Features (6L):High-flow Blaster bite valve w/shut-offand magnetic hose clipLightweight, weather-tight construction Thermoformed 3D backpanelZippered hipbelt pocketInternal organizer pockets External carry straps Side compression straps Reflective logo Safety light attachment 18L:3L/100oz Dakine x Hydrapak 30 lumbar reservoir w/ quick disconnect 420D nylon r