- booost is 99.5% oxygen and 0.5% natural peppermint flavouring. - Oxygen is a colourless gas and has a peppermint aroma. - booost is stored under pressure in an aerosol type can. - A quirk of booost is that the tanks 'feel' empty because oxygen is only slightly heavier than air (Oxygen is 1.429g/L and air is 1.225g/L). - booost comes in two sizes; A 10 litre super tank with 100 shots A 1.5 litre travel tank with 20 shots - booost should be used before, during and after sport, particularly during strenuous sessions - booost gets oxygen into your body the fastest way possible, through respiration. - booost contains no calories, sugar or caffeine.