O2 Blast - Pure Oxygen Supplement, Portable Can Filled with 99.99% Pure Oxygen with Custom Breathing Mask, Energy, Performance, Fast Recovery Time, Ideal for High Altitude & Sports - 10L, 3-Pack

This works great, easy to use. Not a substitute for Oxygen tank. It is helpful

The containers gave me about 3 uses per can . I thought the first can was a bad can but no all three were failures. Never will purchase this brand again.

One can out of the 3 pack worked well and expelled oxygen from the lever. The other 2 cans are sporadic and not effective. I will call for replacement.

I thought it was a fluke, but the 10 liters in this bottle doesn't last as long as a competitor's. I have been using supplemental oxygen before soccer matches for many years. One 10L bottle usually lasts three games. I can barely get two games from O2 Blast. I switched back to the other product to make sure it wasn't me that was just sucking more as I get old. NOPE! I just can't get as much recovery from this product. I tried a second bottle, same thing. Also, every now and then the nozzle trigger doesn't work well, you have to pull the trigger very high up near the cone.

I have used Boost oxygen for several years....thought I would try Blast to compare. I found that Boost was better.....my reason was the Boost lasted much longer! Seemed not to be as effective. Not a bad product, but think I will stay with Boost.

Easy to use Nice have on hand, esp with heart problem. It’s nice to have some O2 on hand to clear my head

This seems to help when I'm working in the yard or hiking in the mountains. If I feel tired and out of breath I take three shots of Oxygen and ready to go again. I think this is a good product for high elevations.

I have been using a couple different brands of these for years for out of breath episodes of COPD. I normally use "Boost" [also available here] but cheaped out and bought these because they were cheaper - BAD MOVE! These are for emergency use, so I didn't try one out when I unboxed them. First time I needed one and pulled the "trigger" - it didn't work at all. Then after a few more pulls, a very weak stream started. Don't buy these - they won't work when you need them, and it'll be too late for a refund. When you need oxygen, you won't quibble over a few dollars.