Mountain Bike - May 2007
HYDRAPAK AS TRAIL
“It’s neither a stripped-down race pack nor a kitchen sink expedition model. Its bite valve is leak-free and relatively easy to use. The best features are the Air Scoop vent system - a combination of an arced rod and foam pads to keep your back cooler - and the cinch cord, which thoughtfully tapers from wide up high to narrow at the waist, so that expensive jacket you lashed to the pack won’t slip out the bottom…”