“It's greatest features are that you don't have to carry a bottle of distilled water with you and you don't have to empty and dry your tank to pack it into your luggage. It is a humidifier that fits in your pocket and it's not full of water so doesn't need to be rinsed out emptied and left to air dry! Very compact, very light weight, and extremely convenient and easy to pack into your luggage or even your hand bag. If I used them for 30 days at a time they would be even greater value for money. I tried the the other wetter chambers but the standard ones are just perfect.
I bought my Air Mini just for traveling and that is the only time I need or use it, other than short hospital stays, overnight, the longest I have used it, is for two weeks but on average it is only for a few days (2-4 often just one night). So I have then used a product that lasts 30 days, for only 1 or 2 nights, then don't have another opportunity for months.”