Little but works well.
This is one of the best style plungers.
PlumbCraft PLUNGER ACCORDION BLACK is a useful tool to have for clogged toilets that needs unclogging. Their design doesn't hold any water inside the plunger and gives more air pressure power to unclog the toilet in less time and effort. The only issue I can think of is that it can only be used on toilets and not others like sinks or bathtubs.
This plunger was shaped differently but the only one available at the time. It worked great.