> For the complete documentation index, see [llms.txt](https://runba.gitbook.io/runba-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://runba.gitbook.io/runba-whitepaper/other-systems/inventory-system.md).

# Inventory System

The Runba inventory has two separate spaces:

1\. NFT Sneakers and Shoebox share one space, users are capped at 256 slots.

2\. Parts and uppers share one space, users are capped at 256 slots.

 

Exceeding the inventory limit may result in the failure of parts upgrade or Shoe-minting.