No matter where Domino’s sets up shop, the international chain has never shied away from embracing local flavors—and at their new location in Glasgow, the Scottish influence extends beyond pizza toppings. Staff members can be seen wearing official kilts made with Domino’s exclusive tartan, Adweek reports.

The wardrobe update follows a Domino’s survey that found that two-thirds of their Scottish employees would enjoy wearing a kilt to work. (Only a third of the general Scottish workforce could say the same.) The company hired Ken MacDonald of Houston Kiltmakers to create the special design. The pattern, which comes in Domino’s signature blue and red, has been inducted into the official Scottish Register of Tartans.

“Domino’s has been in Scotland for over 20 years so we have strong ties and affinity with the country, the people, and the culture,” Scott Couper, the manager at Domino’s Glasgow Central, said in a statement. “The kilt is very much a family tradition in Scotland and that is how we see ourselves at—one big family all striving for the same goal of delivering freshly made, great tasting food to pizza lovers all over the country.”

The kilt is optional, so employees who aren’t partial to the breezy, patriotic garb can keep their trousers on. But Domino’s makes it clear there’s one area where they won’t bend to tradition: Underpants must be worn at all times.

[h/t Adweek]

All images courtesy of Domino's UK