For long adventures on the trails, you'll need the Portage Pack. Loaded with lots of storage areas for all the gear you need to haul, plus there's a large 3 liter reservoir to keep you hydrated on your journey. The reservoir features a big fill opening for fast filling and easy addition of ice. A dedicated bladder compartment keeps your water supply away from your other gear, and is insulated to keep your liquids cooler longer. Velcro loops keep the bladder from slipping and sliding.