The agency settled on 55 inches as the height limit for free-kid-riders based on data from the World Health Organization and ...

Predicted heights are usually within 4 inches, taller or shorter, than actual adult height. Medical conditions and other factors can affect a child's growth. Estimates are less accurate when ...

Petite people up to 5 feet tall, or those wanting a shorter pad, can look into the REI Kindercamp pad ($49.95), which measures 60 inches long—longer than most kids’ pads.