The proven Air Flow backpanel and shoulder strap designs deliver breathable comfort, and a new recycled polyester is rugged and sustainable.Features3L / 100 oz Dakine x Hydrapak® 3D lumbar reservoir w/ quick disconnectHigh-flow Blaster bite valve w/shut-off and magnetic hose clipBreathable Air Flow backpanel and shoulder strapsDK Impact CE-certified Spine protector compatible (not included)Front helmet attachment loopsDeployable armor carry strapsFleece lined sunglass pocketMesh side pocketInternal organizer pocketsSafety light attachmentIntegrated rescue whistleMaterials100% 450D ripstop recycled polyester (rPET) exteriorDimensions732 cubic inches [ 12L ]20 x 9 x 6 [ 51 x 23 x 15cm ]1.6 lbs. [ .7kg ]CareIf your Dakine bag gets dirty, we recommend hand washing with mild soap (like Nikwax Tech Wash), cold water and a soft bristle brush. If hand washing is not going to do the trick, use a front loader washing machine. To ensure your backpack doesn't get tangled, place inside a pillowcase