neoprene

A synthetic rubber produced by polymerization of chloroprene and used in weather-resistant products, adhesives, shoe soles, sportswear, paints, and rocket fuels.

A synthetic rubber, a polymer of chloroprene, commonly used in wetsuits, laptop sleeves, orthopedic braces, electrical insulation, liquid and sheet-applied elastomeric membranes and flashings, car fan belts, etc.

a synthetic rubber that is resistant to oils and aging; used in waterproof products