Neoprene or polychloroprene's a family of synthetic rubbers that're produced by polymerization of chloroprene. It's used in a wide variety of applications, such as in wetsuits, laptop sleeves, orthopedic braces (wrist, knee, etc.), electrical insulation, liquid and sheet applied elastomeric membranes or flashings, and car fan belts. Neoprene's the trade name used by DuPont Performance Elastomers. Applications General Its chemical inertness makes it well suited for industrial applications such a… (More on Neoprene)