> For the complete documentation index, see [llms.txt](https://ballman.gitbook.io/whitepaper-2023/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ballman.gitbook.io/whitepaper-2023/blockchain-contracts/equipment-and-booster-smart-contracts.md).

# Equipment and booster smart contracts

The equipment, experience-based scalable skills and consumables are managed on a smart contract linked to the Ballman. This means a Ballman can own equipment external to the main NFT, which upgrades their skills. This equipment can also be sold on a marketplace. To minimize the costs associated with transactions (gas fees), this Smart Contract is managed on the Polygon blockchain (compatible with Opensea).