Why the taqiyah cap Muslim wear do not fall off ?

       In fact, in China, Muslim in most of the areas usually wear a pure white taqiyah cap with hard lining inside, so as long as you choose the appropriate size, it will not fall off. Exquisite cap with embroidery is popular in western. Although there is no lining inside, the cap is made of hard material. The white or beige domed cap in the Middle East and North America is soft and has elasticity, firmly fastened to the scalp and won't fall off at all. The big boat hats in Malaysia are hard, it stuck in the head, and it's hard to fall off,either.