The Camelbak Lobo is great for cycling or hikes where you don’t want to carry a lot of things. We love to use cycling packs for our children on hikes—minimizes the child trying to carry out every rock they find. This pack does NOT come with the bladder—the pack was used by my child on a hike and said child chewed on the bladder ‘straw’/mouth part. From the REI description: *Air Support® back panel with body-mapping technology provides a comfy carry; ventilated harness ensures breathability *Integrated tool organization and a helmet carry system make it easy to pack up and head out Includes a 2-liter reservoir for hydrating on the move *Magnetic tube trap keeps hydration at the ready *Removable stability belt balances your load