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

Great product, wife loves it and easy to use, you don't need to carry oxygen around. If you just need a little help she only takes a few hits then she's fine, good stuff.

Ive used this before, good product. My issue was with packaging. 4 loose cans in a big box. Not cool.

Lifelong asthmatic with early onset copd, ordered this for a boost at night when i have some troubles with oxygen. Works perfectly, as advertised. Great for the gym also for that workout boost. No Complaints

Used those before, did not feel much which might be a good thing. My teenager will participate in 4-day long swim competitions soon. She plans to use those in between the races. This particular pool is famous from bad ventilation, so she wants to try those oxygen "tanks" and see if she can avoid getting sick after the weekend as she always gets it in there. The price was competitive, portable size is great to keep it in backpack and it is totally legal. We choose no scent to avoid any headaches.

For home use the 10 size is better buy. Since certain celebrities got involved in the company the price has gone up considerably. If you need oxygen on a regular basis, buy a Concentrator machine. Boost is for limited home or sports use. 3 stars is because I feel the price is to high.