The Osage River Drake Hydration Pack’s design is suited for hikers, runners, cyclists, and climbers. The included hydration bladder is BPA free and puncture resistant. It has a 2 liter capacity so you can keep yourself adequately hydrated on long treks. The hydration bladder is stored in the pocket closest to your body to keep the rest of your pack well-balanced. The main compartment is separated from the bladder pocket by a padded wall and provides generous storage. The 2 additional pockets are located at the top and front of the backpack; the front pocket has 2 elastic pouches to store accessories. A hidden compartment at the bottom of the bag houses a safety yellow rain cover with a tether so you can make sure the pack and its contents stay dry. The pack measures 18.5 inches tall, 10 inches wide, and 7 inches thick when full.