CONVENIENT is the word I use to describe these. Easy to take with you, set up anywhere, take down and put away. I just love them. Kelly Yates, 4X NFR Qualifier - Pueblo, Co. Check Out the Differences. The Choice is Clear! EXACT Size of a 55 Gallon Barrel. Thicker Fabric and Stronger Wire. Quality Design Built to Last. Invented and Owned by a Professional Barrel Racer with Your Horse's SAFETY in MInd. US Patent No. 7,870,838. POP-Up Barrels; is a registered trademark in it's entirety.