Supplemental (5L Canister, Pack of 4, Natural)

Very handy and effective in a pinch. I keep a can in my back pack when hunting Deer and Elk. Helps give a quick boost when packing a load in the mountains. My wife got sick and Her O2 levels were down in the mid eighties. That is NOT GOOD. I gave her a can of this O2 and it brought her levels back into the nineties quickly. I was very glad to have that on hand at that moment!

Works great but a little expensive otherwise would give it a five

Boost Oxygen works great.

this time very poor not alot of oxygen in canister.

We are using them to escape the house in case of a fire. As a 30 year firefighter, I saw more people die from smoke inhalation. I gave only three stars because they are pure oxygen and not just compressed air. O2 can explode in a fire.