Plastic barriers are corrugated and nearly indestructible. They can be used to block balls and pucks from traveling under bleachers. They can also be used to separate bowling lanes, mark obstacle courses, and act as hurdles for agility games or other activities. Sold in sets of 8, each barrier measures 39" long and 11" high. Collapses if fallen on. Barriers interlock by tunneling into each other which also provides for easy storage. Activity guide included. Each set of 8 provides 26' of protection. Made in the USA.