Performer displays two boomerang shaped pieces, one with a green caterpillar, and one with a red one. The piece with the caterpillar at the bottom is obviously longer, but the performer says they are for ever growing longer. When the shorter caterpillar on top is “stretched” and transferred below the longer one, it now appears longer ! This is repeated as often as you like. Then you turn the pieces over, and there is a very beautiful butterfly formed with the two pieces, and every one can see both pieces are now exactly the same size. Polybag packing with instructions. 25% discount if you buy 10 or more!