Veru useful for trip small and easy to use my little boy love it.Although is the cheapest related product, has a fantastic result in performance. Also practical to use and to store!!!Regularproduct used for asthma related health issuesIt work perfect for the summer and people that always travel never homeThis is my 3rd machine and has been the best.. good flow and no clogging if properly maintainedIt's so Tiny but it's SO CUTE!! It's light weight. Easy to use. Great for emergencies. Easy for little ones to hold. It even turns off on its own!!!!!! Oh and get this it's so silent! No more head aches!! Definitely recommend for everybody with Asthma. Even if you get it for a friend or family. This is a definite MUST HAVE!Es lo mejor para un asmático