The Watchful Eye Elena Santos Butterfly Tank Top is too good for the tastefulness of the fashion queens now! Looking for the perfect tank for any type of workout? Then this is the item for you! the watchful eye elena santos butterfly flowy muscle tank by Bella is stylish and functional, making it the ideal piece for a run, a Zumba class, spinning, yoga, or any other kind of workout. Heck, you could even wear it lounging around the house or running errands. It’s as versatile as it gets.