Love these atomisers! They are so much better than the ones that are meant to pump from your perfume bottle i often found they weren’t compatible with all perfume bottles but these you simply spray the desired amount of liquid directly into the pocket sized glass atomiser.. Slip it back into the protective (coloured) part and off you go! Twist up to use and twist down to chuck it back into your Bon Maxie bag ;) These work well with good seal and not flimsy! Highly recommend! I bought one black and one white one for me and one for hubby or could use one for a day fragrance and one for an evening fragrance!