The Freestanding Wavy Straight Rung is a variation of the traditional straight playground equipment. The wavy top bar creates a slope changing challenge that requires children to adjust their swing to allow for the up or down climbing slope. This playground climber is both fun and physically challenging. It is important that a child utilizes their muscles in order to develop proper muscles mass and most children develop these muscles while they play on playground equipment like the Freestanding Wavy Straight Rung. This climber is great for kids age 5-12, and is built to withstand heavy use at busy parks and playgrounds. Manufactured in the US out of heavy-duty galvanized steel, this climber was developed to have a long life. Sii is committed to child safety and manufactures all its commercial use play equipment following playground safety guidelines.