Fast-casual restaurant concept The Habit Burger Grill partners with on-demand delivery company Postmates to offer on-demand delivery from its 225 locations across the US.

Customers can now place orders for a range of menu items from the restaurant chain through or Postmates app on iOS or Android.

Members of Postmates’ Unlimited subscription service can get free delivery on all orders when they pay annually.

Postmates now operates in 3,000 cities across the US, with customers able to order from more than 500,000 restaurants, grocery and convenience stores and traditional retailers to order food.

Postmates merchant lead senior vice-president Dan Mosher said: “We are thrilled to add The Habit Burger Grill to our already long list of partners.

“Our goal is to provide our customers with the most choices of any delivery platform, and adding The Habit Burger Grill to our offering takes us closer to that goal.”

"This partnership helps us bring our delicious, made to order food to guests wherever they are."

The Habit Burger chief brand officer Iwona Walter said: “We are excited to offer the convenience and reliability of Postmates’s service to our Habit fans. This partnership helps us bring our delicious, made to order food to guests wherever they are.”

Habit Burger offers a range of menu items including hand-cut salads, grilled sandwiches, and sides including onion rings, sweet potato and French fries, and tempura green beans.

Like this it offers Charburger featuring grilled beef topped with melted cheese, caramelised onions, pickles, fresh tomato, crisp lettuce, and mayo. It is served on a toasted bun.

The fast casual concept opened its first restaurant in Santa Barbara, California and currently operates more than 255 restaurants across 11 US states. It also has four international locations across the globe.

Postmates has a network of more than 500,000 restaurants, and other retailers on its platform.

Last month, the company has added a new feature, Postmates Party, to its on-demand food service platform.