Which item is known for its unique combination of a taco shell and a soft tortilla?

The item known for its unique combination of a taco shell and a soft tortilla is the Crunchwrap Supreme. This menu item features a crispy tortilla chip layer and is encased in a flour tortilla, which is then folded and grilled to create its signature shape and texture. This combination provides both the crunch of a taco shell and the softness of the tortilla, making it a distinctive offering on the menu.

Each element of the Crunchwrap Supreme works together to create a satisfying blend of flavors and textures, appealing to those who enjoy a diverse eating experience. Other menu items, such as the Burrito Supreme and Quesarito, primarily focus on the use of soft tortillas, while the Chalupa emphasizes a thick, crunchy shell. The Crunchwrap Supreme stands out due to its innovative design that merges both elements, which is a defining characteristic of this item.