AUSTIN (KXAN) -- America's favorite grocery store has gone hardcore, and for a good cause.

H-E-B brought a concept for a metal-inspired T-shirt design to life Friday, and it sold out in minutes.

The design for the shirts went viral on social media over the summer. Graphic designer Connor Dwyer came up with the concept, as part of a series of videos he made in which he designed metal tees for different grocery stores, until one of the stores agreed to a real collaboration.

And what better store to take Dwyer up on the offer than the top U.S. grocer H-E-B. The Texas-based grocer is headquartered in San Antonio, a city that was once considered the "Heavy Metal Capital of the World."

Dwyer first posted the conceptual designs on TikTok on July 27. The metal-inspired shirts featured the star

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