Perfect for hiking, biking, or just ambling, the Stansport 20-Liter Daypack includes a hydration bladder. This tricked-out 20-liter daypack is constructed of double diamond ripstop polyester and features a zippered stash pocket, a 2-liter hydration reservoir, complete hose, and covered drinking port. The entire package is anchored by a secure, comfortable waist belt and sternum strap for sturdy reliable hydration wherever you go.• Double diamond ripstop polyester construction• 2-liter hydration reservoir• Fully adjustable waist belt and sternum strap• Padded and breathable shoulder and waist belt straps• Padded and breathable backrest with airflow channel for ventilation• 2 zippered main compartments with organizer panel• 2 mesh accessory pockets and 2 zippered waist belt pockets• 1 stuff pocket and 1 zippered stash pocket• Size: 17.5" x 8" x 8.5" 2-liter hydration reservoir complete with hose and covered drinking port Secure comfortable waist belt and sternum strap 8 pockets total for organization | 20-Liter Daypack with Hydration Bladder in Black