4x PRO2 22 Litre Canister Refills (88 Litres Total)

PRO2 canister (22 litres) complete with oxygen mask.
 
PrO2 is a conveniently-sized container of cooled, high-purity, breathable oxygen to aid in the recovery from a variety of physiologically stressed or impaired conditions; to revitalize during periods of physical or mental lethargy; and to stimulate the body at times when peak performance is required.
 
The container is fitted with a conformable mask and tubing to enable continual delivery of the oxygen to the mouth and nose whilst preventing the ingress of any pollution from the surrounding environment.
 
What makes PRO2 special is that it contains an adsorbent which is specially designed to store a much larger volume of oxygen than could be otherwise stored using compression alone. For this reason the device contains and delivers up to three times the quantity of similar container volume products, offering by far and away the best value breathing oxygen on the market. 
 
PR02 contains 22 litres of oxygen in a 650 ml canister. 
(Dimensions: Diameter 65mm, Height 225mm)