Oxygen Plus FDA-Registered Facility-Filled 99.5% Pure Recreational Oxygen Cans - O+ Biggi 3-Pack - Each Portable Oxygen Canister is 220+ Breaths, 11 litres - Restore Oxygen Levels w/Canned Oxygen

My kid was playing with my phone and ordered this, The vendor was 100% willing to refund this order, I chose a different route. 14,272 feet! Decided to test all these negative reviews against my own experience on Mt. Evans. I pushed it till I was gasping in the thin air, it was awful as my chest and head pounded and ached. That morning I was at 305 ft. where I live, with no acclimatization. Five slow breaths off of the can was instant relief. I followed up later with five more. Worked for me. Thank you!

I have been a smoker for the past 29 years and now I have decided to get in shape and quit smoking, well I started doing crossFit and at the end of the first 2 classes I thought I was going to die, or at least pass out, I started looking into oxygen and decided to give these a try, they help a lot, don't get it twisted this is not going to make you superman or let you work out like you've never smoked before, but they do help when you start feeling like you can't catch your breath just take 8 or 10 deep breaths of this and you will feel the difference.

Came empty plus because its potage dangerous, couldn't send it back for refund

Went to some pretty high elevations on a month long trip. 9,500+ feet. And being from a lower elevation State, this oxygen really helped me keep my O2 numbers up. When I felt short breathed, just took a few breaths, all good!

I bought a lot. First two cans opened were empty. So far the next three have been fine. Maybe just a bad batch.