O2 BlastPure 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, 6-Pack

The official description stinks - the top of the can has a simple valve, not much more than what you'd find atop any aerosol can. There's a protective cap so you don't depress it by accident. You must wrap your lips around the non-ergonomic valve, which is quite easy. The original brand with the fancy "mask" attachment allows lots of air to leak in from the backside (it's not air-tight), and is uses a lot of excess plastic to mold that permanently-attached mask - which also makes it bulky to transport, store, and attracts dust that must be cleaned before use.THIS IS BETTER - if not ergonomic. The cap is small, doesn't waste plastic, and when you wrap your lips on the valve you know you're getting 100% of what's in the can.

Sports, outdoor and indoor activities. Get a burst of energy. Get a second wind. Better performance. Great value

I have a portable O2 machine but I don't like carrying it at the flea market so I carry a can of O2 Blast. When I get tired I spray about a half of a breath, three times, and it gives me back the energy I need. Delivery was fast. I ordered on July 27 and the delivery date was stated as between Aug 1 and Aug 5. It arrived on Aug 1

Even though your can might feel empty it's not. I use this after hiking, biking and definitely feel the difference.

Great product but over priced...

No noticeable effect from this product. Won’t re-ignite an ember, which is the most reliable simple test for presence of concentrated oxygen. As far as anyone can tell, it is a can of air. A nine dollar one.

Good

It needs the mask and you can't buy it separately