Under Armour, Dwayne 'The Rock' Johnson Sell Out of Gym Merch

Dwayne 'The Rock' Johnson and Under Armour's 'The Rock' collection; Image via Forbes

Dwayne "The Rock" Johnson, actor and former professional wrestler, partnered up with Under Armour to create "Project Rock" merchandise, which includes apparel, bags and footwear.

Yesterday, Johnson took to Instagram to announce that the first item in his collection—a gym bag featuring his "Brahma Bull" logo—already sold out.

According to The Street, he announced that there would be more items, including training shoes, training equipment, lifestyle gear and technology items, on the way.

Under Armour and Johnson made the long-term marketing deal in January, and Under Armour will design merchandise inspired by films Johnson currently is working on.

So, for now, the existing Project Rock gym bags are collectors items until he and Under Armour release the next items they have cooking.