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Choosing a Baseball Cover: Seam: Safety: Kinds of baseballs
If high quality leather is not available, it is substituted by split leather, which is used to make low-cost baseballs. Commercially available baseballs have synthetic covers and they are recommended for use on the little league or beginners. Baseballs can be classified into 3 types: 1. Polyurethane - This type of baseball is lighter and does not hit as hard as the others. Also called, "Reduced Injury Factor" (RIF), they are intended to be light or their weight is reduced based on different grades for hardness that depends on a player's age and expertise. 2. Cork - This is the core material for the Major League and is made of cushioned cork cores wrapped in a layers of rubber, cotton, and wool. 3. Rubber - This is the most economical choice and they are usually made of black rubber or cork-and-rubber cores. However, this is not recommended for frequent or rigorous use.
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