The Sundance Dressage Arena is our best seller. Along with the Pyramid Dressage Arena, it can be weighted down for extra wind resistance. The Sundance, Pyramid, and Wellington dressage arenas are designed with molded, one-piece rail cones with set-in troughs. This makes set up and tear down easy, and it allows the rail to pop out for safety. The Sundance dressage arena and Wellington dressage arena rails are 1.5” wide x 5” tall, and the Pyramid rails are 2” wide x 6” tall. Visually, the Pyramid and Sundance dressage arenas have rounded curves on rail cones, while the Wellington dressage arena has a block-style cone.