Perfect for hiking and traveling the camelbak arete 18 hydration backpack will help you stay organized and properly hydrated and has a 15 litre 507oz crux reservoir offering 20 more water per sip thanks to a reversible design the backpack easily converts into an insulated reservoir sleeve and features one main compartment and two side pockets for your snacks extra layers and all the essentials a comfortable fit is ensured by adjustable backpack straps a removable sternum strap and a l