Air channel allows air to flow between the pack and your back
The CamelBak Cloud Walker 18 Hydration Pack keeps you conveniently hydrated while storing your essential gear. The 100-oz Antidote™ Reservoir utilizes innovative designs to keep you hydrated. Its Quick Link™ system with easy tube disconnect and auto shut-off features makes it easy to route your tube or add accessories. Quarter turn cap is easy to get on and off. Low profile design is easy to carry. Air channels allow air to flow between the pack and your back, keeping you dry and cool. Fixed diamond-mesh harness. Imported. Capacity: 975 cu. in. Empty wt: 1 lb. 5 oz. Colors: Sienna Red/Dark Red, Charcoal/Graphite, Deep Olive/Sprout.