We are felt toys supplier,we wholesale felt toys for over 20 years. 

Wool surface with fine scales, similar to the hair, Shun hair is very smooth, very difficult to reverse the hair. This feature can be used to determine the direction of the hair: the wool (or hair) labeled A end B side, on the left hand, A end at the tip of the thumb, little finger toward the end of the B end, right hand finger hair right push, if the hair does not shift with the finger driven, A B is to shun Mao, vice versa and if the hair can be finger push, it is A to B is reverse. This is called directional mobility. The principle is very simple.

Felting wool is the principle, along with the hair entanglement reverse together, mutual entanglement scales, nanshenanfen. Imagine your own hair, pour it over, the acid is very good, do not try.