Up to 12 students hold the rungs creating a "horizontal ladder". Once a rung is crossed, it moves to the end of the ladder to extend climbing distance. It's an excellent team building activity that also develops upper arm strength. Includes 6 durable hardwood dowels in 6 colors with rubber handle and activity guide. Measure 36" L x 1 1/4" diameter. Mats sold separately. Made in the USA.