Portable 40L Natural Oxygen Canister with Inbuilt Mask – Pure Oxygen >95% – 600 Breaths Approx. – For Air Pollution Relief, Quick Recovery, Immune Boost, Sports & High Altitude (Pack of 4)

Best compared to other available of this type

It’s a portable and user friendly. ButI never thought that u guys will send an empty bottle amongst the 4 . One is empty I I puff it several times but it didn’t work. And even I ask. For pure O2 . I require no additional flavour….. Why did u send me this..I have many time an O2 canister for my mother since past 6 yrs from the same companyAnd I think they changed there packaging. The mask doesn’t fit to the nozzel wellA great pull is required to be out from the cartoon for the can

Horrible experience. Patient could not use as the cylinders were empty or partially used.

Not good

Very bad product, no O2, it's just normal air, smell is very bad, very less air inside..not even full...total waste of money