I don't know about the low-fat tortillas, but I eat these whole wheat sandwich wraps called
Light Flatout Wraps. They are 90 calories and have only 2.5 grams of fat!
Not to mention they are huge for those stats. I fill them with low-fat lunch meats, FF cheese, lettuce, and all the veggies for a low fat lunch.
You can usually find them in the grocery store right next to the pita breads.