Works like a charm. Reprieve from sleepy eyes.
Fast shipping and a good price thanks
Have bought these in the past pilot mall has the best price
worked great for altitude. be careful when new more o2 comes out than needed, control of release important to get all 100 puffs, as it decompresses less air comes out.
Short Term usage
For flight I'm not to sure TSA would allow it w/0 a dozen certifications.They claim 150 breaths. Adults average 20 breaths. However in an emergency we semi-panic and that would increase at least 50%.On the other hand if you use it after calling 911 it would seem to be worth it.