> For the complete documentation index, see [llms.txt](https://gritti.gitbook.io/gritti-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gritti.gitbook.io/gritti-whitepaper/game-play/sneaker/sneaker-level.md).

# Sneaker Level

Users can level up their Sneakers NFTs by spending **GRI,** with **GRIT (temporarily not needed) being required at certain milestones.** Each level-up takes a fixed amount time to complete. Both the time and GRI required will increase depending on the level of the Sneaker. This process can be made faster/boosted up by spending more **GRI**. Note that at certain milestones, you will not be able to level up a Sneaker NFT unless a certain amount of distance has been run on that Sneaker NFT. This is akin to “wearing in” and “getting used” to your Sneaker before you can upgrade it to higher levels.

Upon level-up, users will attain 4 - 12 additional Attribute points to assign according to their Sneaker quality.

| Quality                 | Attribute Point/Level up |
| ----------------------- | ------------------------ |
| N.Normal                | 4                        |
| R.Rare                  | 6                        |
| SR.Super Rare           | 8                        |
| SSR.Superior Super Rare | 10                       |
| UR. Ultra Rare          | 12                       |