Great quality.
As a 3rd grade teacher I got this because of how many kids came to me with headaches amd pain that I could not medicate or help with. Often now if a kid comes to me with a migraine or headache or stomach uncomfort I tell them a few deep inhales of this won't cure but will lessen the pain and they all come back saying they feel a little better. Its wonderful to not feel helpless with friends working so hard to learn. The ease of use is excellent.
Rating: 5 stars