The double buggy has an optional adaptor bar that mounts the single baby recliner seat to the left-hand side of the double stroller in the top position for better forward vision. If you are not taller than165cm then we would recommend the double baby recliner seat is mounted in either the front or rear position of the double baby buggy (infants and small babies only). The toddler seats do not impede forward vision in the top position.