The best trails are often the most remote ones lying deep in the woods or in the middle of the desert, but the only problem is you need to have all your gear on you when you"re out there. Luckily the Dakine Amp 18L Hydration Pack has all your needs covered. It carries up to 100 ounces of water to battle thirst and features an Air Mesh suspended back panel to help you stay cool when the sun is beating down. Internal organizer pockets hold spare parts, extra tubes, and tools in case you break down and need to repair something, and a deployable rain cover keeps everything dry in case it starts pouring.Durable 630D nylon fabric resists tears in case you take a spill riding down the trail Air Mesh suspended back panel allows air to flow through to your back so you stay cooler and drier Deployable helmet carry holds your helmet when you don"t need it 100-ounce (3 liter) reservoir holds water for a full day of outdoor activity Removable waist belt provides a snug fit Deployable rain cover keeps your gear dry if you get caught in a downpour Fleece sunglass pocket keeps lenses from getting scratched, and internal organizer pockets keep small items organized Rescue whistle in case of emergency Product FeaturesMaterial: 630D nylonReservoir Volume: 100 ozPockets: 1 sunglass, 1 padded phone, 2 mesh side, (internal) organizerWaist-Belt: yes, removableCompression Straps: Locking Bite Valve: Weight: Dimensions: 19 x 10.5 x 8 inVolume: 1100 cu inRecommended Use: mountain bikingManufacturer Warranty: lifetime