From the author's README on Thunderstore

A fan-made clothing mod for ReSkate: a textured black short-sleeve tee over white long sleeves, inspired by the Eminem x NERDS Gaming T-Shirt.

The shirt

Red dripping EMINEM wordmark on the front.
Gaming artwork on the back.
Print size, proportions and collar spacing guided by the official product photographs.
Original heather fabric, folds, stitching and material settings retained.
White undersleeves, collar and lower hem.
Nike branding removed from this added item.

Adds a separate wardrobe item named Eminem Nerds Layered Tee.

Install and equip

Install this package through the ReSkate launcher's mod manager. For a downloaded ZIP, use Install .zip or drag the ZIP into the launcher.
Enable the mod and launch ReSkate.
Open Apparel → Tops and search Eminem.

Restart the game after installing or updating. Disable any earlier local test copy of this shirt before enabling this package, so only one copy is active.

Requires ReSkate. The SamiPuma shirt pack is not a runtime dependency. A future game-build update may require rebuilding this content mod.

Credits

Fordy — clothing adaptation, print placement and package.
SamiPuma — the Black/White layered shirt's material styling used as a reference: Nike Short Sleeve Over Long Sleeve Shirts Pack.
ReSkate Studio — cosmetic creation and compilation tools.
Eminem x NERDS — original merchandise artwork and design: official product reference.

Artwork preparation used AI-assisted extraction from the product photographs. This is an unofficial fan mod, with no affiliation or endorsement from the merchandise creators, Nike, EA or Full Circle. Third-party artwork and trademarks remain the property of their respective owners.

Install Eminem x NERDS Gaming Layered Tee

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for Eminem x NERDS Gaming Layered Tee and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.