Regarding another component of the shoe, the rubber outsoles are made by a process that results in significant amounts of extra rubber around the periphery of the sole (called flashing, similar to...

Regarding another component of the shoe, the rubber outsoles are made by a process that results in significant amounts of extra rubber around the periphery of the sole (called flashing, similar to the. With about 40 factories using thousands of molds and producing over a million outsoles a day, flashing constitutes the largest chunk of waste in manufacturing the shoes.