The only wet beneath the integrated waterproof cover of Deuter's Cross Air Hydration Pack is the liquid refreshment you loaded into the three-liter hydration reservoir. There's a good chance that the beverage inside that hydration pouch will stay cooler than in ordinary packs because the Deuter Cross Air Hydration Pack features an Advanced Aircomfort spring steel frame that elevates the pack slightly away from your back, allowing air to flow through the channel from three sides and dispersing excess body heat. This airflow is enhanced when you're riding your bike or in motion, so your back and pack contents remain cooler than other cycle pack designs. Other enhancements include a bike helmet attachment and expandable mesh compartments for your bike tools, energy bars and GPS components. This is a smartly configured, high quality European bike pack that works extremely well through a range of applications on the trail and on the streets--and it's priced right for both commuters and recreational riders.