High quality 7.5 ml glass car diffuser perfume bottle, complete with lid, cap & string. To use, simply unscrew the lid, remove the cap, secure the lid and tilt slightly to saturate the cork for a strong smelling car perfume. Be careful not to tip too rigorously as it may cause spillage. Once uncapped, keep diffuser upright. To revive the scent again slightly tip the bottle to saturate the cork.