What is ellies backpack the last of us?

Ellie's backpack in "The Last of Us" is an essential item that carries various important items throughout the game. It is a green backpack with multiple pockets and compartments that can be seen on Ellie's back as she travels with Joel. Ellie keeps important items such as ammunition, medical supplies, crafting materials, and food in her backpack. The backpack also serves as a way for Ellie to customize and upgrade her gear throughout the game. The backpack's design was inspired by military rucksacks and was created by artist John Sweeney. The backpack has become an iconic symbol of the game and is frequently referenced in fan art and merchandise.