A scroll.
Scrolls remain one of the most important pieces of equipment in a ninja's arsenal. Because of their size, multiple scrolls can be carried into battle in the front pouches of a flak jacket or in a pouch. This will save space and not sacrifice a much needed piece of equipment which may be required later. The scroll allows the ninja to summon creatures, people and items to their aid. Some jutsu can also be stored in them.[1] There are also larger scrolls that ninja keep on their back, such as the Scroll of Seals and the Toads Summoning Contract that Jiraiya keeps and Naruto Uzumaki wore while in his Sage outfit.
References
- ↑ Naruto Chapter 145, page 9