“Chlorobutyl Rubber (CIIR) is used by the tire industry in the production of inner liner of the tubeless tires and radial tires, heat-resistant tubes, and by the rubber processing industry in the production of rubber technical items and medical items.” Can it be used for the manufacture of sneakers? I would assume its possible. If anyone wants to give any insight make sure and post! Via astlettrubber.com & manufacturer.com.