I had a store bought tarp over a PTO wood chipper that I own. I tried bungee cords to help keep it covered, but it didn't fit very well. After looking at several online custom cover companies, I decided on Alco covers to make a custom cover. I choose a rectangular cover and attached a picture of the chipper. I received a response after a few days requesting more information, then another requesting specific measurements. After about 10 days the cover arrived. The material is much heavier than the old tarp and the fit is better than I had expected. The included drawstring keeps the cover in place too. I expect this cover to last for years.