Packaging and delivery were excellent. Finding the strips really easy to use, feel relatively comfortable in my mouth and taste nice. - I have some sensory issues so this was a real bonus. A week in and my teeth look brighter than before. My only suggestions for improvement would be: - state on the strips packaging which is for the top teeth and which is for the bottom - being clearer in terms of the results you can expect if your teeth yellowing is due to thinning enamel rather than enamel staining (as mine is). The info is there, but buried in the FAQs - if you did not know the reason for your yellowing teeth, or did not know that you are unlikely to get huge improvements from whitening if you have thinning enamel, you could be very disappointed.