Check the listing for details. Camelbak Cloud-Walker-18 Hydration Backpack, 85oz Reservoir. Condition: New without tags. Listed at 48.95 USD. Equal parts technical and functional, the CamelBak Cloud Walker 18 hydration pack keeps you light on your feet as you move through your day, no matter the journey you're on. Made with 200-denier recycled ripstop nylon; a C0 durable water repellent (DWR) finish helps moisture bead up on the surface; C0 DWR is a water-based, PFC-free formulation Included 2.5-liter reservoir gives you hours of hydration on the trail; you can also remove the reservoir for extra storage capacity to pack around town Air Support back panel is body mapped to ventilate areas of the body that generate the most heat, while keeping load close to your body for increased stability Exterior zippered pocket secures your small valuables 2 side stretch pockets expand for extra water bottles or essentials Trekking pole attachments make it easy to secure your poles when you don't need them Side cargo compression straps secure the load Backpack volume: 18L Hydration volume: 2.5L (85oz)