Place one tortilla at a time in the microwave for 10 seconds. Spread a layer of green pesto and mayonnaise on tortilla. Add avocado, mozzarella and sun-dried tomatoes. Sprinkle with salt and red pepper flakes. Then add the arugula.
Fold tortilla over the filling, then fold the sides and roll forward. Repeat with the remaining ingredients.
Serve at room temperature with some extra green pesto sauce. Enjoy!