MATERIAL--ABS+PVC KEEPS FLIES AWAY FROM YOUR FOOD--You can finally enjoy a conversation over an outdoor meal without swatting flies all the time. This is a light-weight, odor-free fan you place on top of your outdoor or picnic table to keep flies from dive-bombing your food. HOW DOES IT WORK--The dots refract/bend light which scares the insects.Bending light is not a part of their DNA.In their little fly minds, the bending colored lights are not normal in nature and it appears dangerous to them.They will always choose to go somewhere else. WIDE USE--Sunbathe,play cards,sit by the pool or dine out on the back deck without flies landing on you or hovering over your food.No more nasty,disgusting Mosquitoes crawling all over your sweet treats it will work fine in the shade as well as in the sun. CONVENIENT TO USE--Our repellent fan is cord free.It runs on 2 AA batteries(not included in the package).You can use it anywhere you like.