• AUTHENTIC NATIONAL PARKS FOUNDATION: Showcase your favorite park with the only 100% authentic National Park Foundation hydration backpack.
• SATISFY YOUR THIRST FOR ADVENTURE: Lightweight and comfortable; This hydration pack is a terrific companion for all your day-long or overnight hydration needs
• LEAKPROOF HYDRATION BLADDER: Included is a 2-Liter fillable water bladder; Durable, kink-free sip tube and push-lock cushioned bite valve; Large 2-inch (5 cm) opening for ice and easy cleaning.
• CUSTOMIZABLE COMFORT: Backpack for men, women, and youth; Adjusts to fit all frames comfortably; Notched foam stabilizer and mesh covering means you can wear this pack for hours.