One of the great things about LED and Fire Poi is the 'comet' trail of light following the Poi head as it travels around the body. This flowing trail gets added to Fabric Poi not as light, but like a gymnastics ribbon, a lightweight colorful fabric that catches in the flow of air behind the Poi head. As a Day Poi these do look fantastic as they spin and dance around leaving trails of colorful fabric. Scarf Poi and the Ultra Poi are both designed to display the Comet Trail effect during sunny days and at night under a UV / Blacklight light source.