Jumping spring also called finger trap set of 12

How high do you make the tube jump? When the tube is compressed lengthwise, tension is created in the plastic fabric. When released, the tube jumps up to two meters. Super cool right! But this jumping spring is also kind of magic trick also called Chinese finger trap.

How the finger trap works:

Put both index fingers into the ends of the tube and then try to get the fingers out again. As a normal reaction, you simultaneously pull the fingers back. But with this, the finger trap contracts, the diameter gets smaller and the trap gets longer, and the fingers are trapped. To get the fingers out again, however, you have to push your fingers together to make the diameter larger again. Super funny children's gadget.

Fun as a small gift, reward gift, shoe gift or handout gift.