A Head Hugger is useful when a baby first moves up from the carrycot to the standard seat as the shoulder harness straps may pass irritatingly close to their ears, a head hugger can correct this by concealing the excess strap which is above the baby's shoulders. The Head Hugger can be fitted to the standard seat even if a body harness is being used to secure a small baby rather than the built in five point harness, which can be a little large for some small babies.