Help with understanding 「すそをはじく ように引っ張ると」 in sentence


The full sentence is this:

> 撥水がすごいので屋内に入る前に着たまますそをはじくように引っ張ると水を払うことが出来る。

The part I am having trouble with is:

> すそをはじくように引っ張ると

Can anyone shed some light?




It's to vigorously pull the lower part of the raincoat in order to shake the
rain off the raincoat. はじく is to flick or snap. This is something you may do
_after_ you used your raincoat. The sentence basically says the water-shedding
quality of the coat is so great that [you only have to shake it to dry
it](https://youtu.be/ZelFfiwDbD4?t=20s).

