Freestanding Over Under Overhead Horizontal Ladder. As children grow and age their abilities change. Overhead Climbers are used in the 5-12 age group, particularly around the older ages in this range. Overhead climbing helps with dexterity, spatial perception and development of the upper body. Different heights on the structure allow value to wider range of physical abilities. Multiple children may be at play at once. Theme or dramatic play may include imaginary river crossings, crossing a moat, or dangling above crocodiles!