How to inflate and care for your FUNBOY Video HEREThe #1 reason a pool float won’t stay inflated is improperly closed air valves. Check to make sure all valves are fully closed and that there is no air leaking from valves. Fully open the air valve, add additional air and fully close the valve. Don’t be alarmed if you have to add some additional air after the first few uses. This is the natural stretching of the material that occurs when weight is added or the float absorbs heat from the sun.  Adding air does not mean there is a leak. This simply means the pool float has expanded slightly.