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I explain frozen hand towel, the Push-cold.
At first, I dampen a towel a little.
I squeeze excess water and remove it.
I wind a wet hand towel around an dedicated stick.
I inject the coolant of a cylinder of the Push-cold.
A hard cold hand towel is completed in this state.
It become unable to push this refrigerant with a button and is hard to atomize it for a person.
A refrigerant is not ejected when upturned, so it is safe.
Because a hand towel is winded around the stick, coolant does not go out and is usable safely.