It is also known stress ball. it is as Irregular bounce, perfect for improving reaction times, hand and eye coordination and foot speed Ideal for goal keepers, cricket players and wicket keepers Great tool for warming up as ball goes everywhere
There are several different types of stress balls that originate from many different countries. The most common type of stress ball (in America) is the “bean bag” type (commonly known as a “Hacky Sack” in Australia) and this stress ball provides a force to make you feel good and it gives off a satisfying noise that allows you to understand that something is actually happening. The stress ball that is most common in Australia is the foam type, this type prevents stress through resistance from squeezing the ball. The third type of stress ball is the Chinese form. These are not like the others as these are not squeezable, they are solid, they usually come in pairs so you can roll them together to make a soothing a sound and a smooth sensation feeling in your hands.
There are many different types of stress balls. Some are made from closed-cell polyurethane foam rubber. This type of stress ball is made by injecting the liquid components of the foam into a mold. The resulting chemical reaction creates carbon dioxide bubbles as a byproduct, which in turn creates the foam.
Stress balls, especially those used in physical therapy, can also contain gel of different densities inside a rubber or cloth skin. Another type uses a thin rubber membrane surrounding a fine powder. The latter type can be made at home by filling a balloon with baking soda. Some balls similar to a footbag are marketed and used as stress balls.
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