O2 Blast - Portable Oxygen Can, Filled with 99.99% Pure Oxygen in a Can with Breathing Mask for Sports, Travel, and High Altitude Use | On-The-Go Air Support for Hiking and Outdoors – 10L, 6-Pack

Clears the sinuses and the mind too. Simple and rational use makes this a great thing if feeling a little run down.

Works great. No difficulties at all. I get about 25 inhaling shots out of each can.

There is never anywhere near what it advertizes as 2oo blasts of oxygen. Never more than 50.

I did not like the tops of these. ( used to the ones with mouth covers I guess) but I also do not think they are as effective either.

These are extra excellent when used for a brain boost to alleviate fatigue as well as a crucial part of anyone's first aid bag. They're easy to use extremely lightweight and have a long shelf life. I highly recommend them.

This product very good 02 I been using for over 2yrs. I feel so much better then the 02 concentrator thx

Really useful . When you need a breath, this works great

works as published, I use it when I fly. There is a odd flavor/taste to the O2 other then this it works well