I am very glad with my Genie Neti Pot. I immediately bought a second one for my mother. The shape and colour are very enjoyable to the eyes and to the hand. The opening is large enough for a tea spoon to fit in with salt. The plastic is very light and thin, so that one can easily see the water level. The advert inform us that the pot is 150ml, but it actually contains more than this. It is about 300ml.
I did not have the problems with the lid mentioned by the two previous reviewers. My lid fits well, and let some air in when I pour the water. However, my advice is not to fill the pot completely, but just to half of it (150ml) so that one has no problems at all with the exchange of air and water.