Next Day Jumps manufactures dressage arenas. Choose from 20 x 40 meters or 20 x 60 meters. Both are can be used as permanent or temporary arenas. The 4x4 posts stake down with hardware supplied in the kit. Layout is easy and instructions are included. Correct in every detail you will be delighted to own and use this classic arena. And you will love the low price. Free delivery to 48 states. I'm going to mention free delivery one more time. There is no better deal on a dressage arena.