Our gal pals at Oiselle conjured this sundress that could be a run dress. The Runderful puts the comfort and performance we love in our run gear into a swingy style that’s dress-up-ready. No show-through. Keyhole back. 34½" long on size 8. Whisper-light mesh lined with an updated, soothingly soft nylon/spandex. 4, 6, 8, 10, 12.