The Kid's Rumba MNP 35L Backpack by Lucky Bums is a serious multi night pack designed specifically for kids with torso measurements between 13 – 16 inches. The 35 liter capacity pack comes loaded with features like hydration bladder, padded airflow back panel, dual density shoulder straps, detachable padded hip belt, waterproof top zipper, and rain cover. Its durable construction combines the toughness of 600D Ripstop Polyester, 600D Dobby Polyester and 600D Oxford to provide awesome protection from the elements and a long lasting durable pack. Strap the sleeping bag on top of this beauty and you'll be well equipped to handle that one, two, or three night trek. For sizing, make sure to measure as a proper fit is important on multi night treks and even more so for the younger folks. Lifetime warranty against material defects and workmanship.