Make the vinaigrette by combining the rice vinegar, lime juice, soy sauce, and sesame oil in a small glass jar and seal with a lid; shake well. Set aside to allow the flavors time to mingle.
Make the salad by combining the cabbage with the carrots, cilantro, green onion, and red bell pepper in a bowl and toss.
Add the sliced mango and sesame seeds then drizzle with the salad dressing. Gently toss to combine.