Flex Play Series. Physical activity and development are vital for children to grow into healthy adults. Our Flex Play Series seamlessly blends outdoor play with physical development. This 4.5” post set offers a variety of climbers, bridges, and steps designed to provide a perfect outlet for creative energy. The Flex Series carries the ultimate value in safety, quality and detail. Ages 5-12, Capacity 50-54 Children, Use Zone 55' X 50'