Unscrew the bottom to fill water.
(sand or rice would also work)
Inflate the base with an air pump until it's steady enough, then close the upper cap.
Push the filling valve into the tumbler
to prevent air leak.
Inflate the conjunction part with an air pump until it's stable, then push filling valve into it.
Inflate the punching main part with an air pump until it's full, then push the filling valve into it.
Inflate the pillows by mouth or by using the pump (for your convenience).
You can deflate the pillows and store them in their designated
pocket when they
are not in use.