Aerial Hoop Dancing Happiness. She is caught in something, we cannot touch; she is part of something, perhaps the creator, as she works the hoop, real and unreal shapes and forms, magic and mystical. She is caught in something, whirled into a free-form bundle, she is caught in happiness. And we smile unknowingly, we smile. This image is in a PNG (Portable Network Graphics) format, which makes it ideal for coffee mugs, tee shirts, etc., as its format allows it to exist without a background. What does this mean? It means that there is no square border around the image--so the background color that you choose encompasses the whole image. Give it a try to see what it looks like!