Neoprene or polychloroprene  is a family of synthetic rubbers that are produced by polymerization of chloroprene. 

Neoprene exhibits good chemical stability, and maintains flexibility over a wide temperature range. It is used in a wide variety of applications, such as laptop sleeves, orthopaedic braces (wrist, knee, etc.), electrical insulation, liquid and sheet applied elastomeric membranes or flashings, and automotive fan-belts.

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