chaps
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Chaps are a type of protective overpants originating as cowboy workwear. Their purpose is to protect the user's legs and trousers from damage. They are usually made out of leather or similarly durable material.
Chaps are generally made up of a belt and two individual leg coverings held up by the belt. They lack both a crotch and a seat---i.e., the leg coverings are not connected to each other.