Delivering on spider silk’s promise

Abstract

Adidas, The North Face, and Patagonia are among the brands jostling to become the first to launch a mass-market product made from synthetic spider silk. Adidas is racing to introduce a biodegradable running shoe made from the silk later this year. The North Face’s Moon Parka with waterproof spider silk fiber could become a must-have for eco-minded fashionistas. But don’t ditch your old nylon running shoes and jackets quite yet. Behind the scenes, manufacturers are having problems translating lab-based processes for the novel material to commercial scale. Spider silk developers Bolt Threads and Spiber—both keen on explaining how their silk will change the world—have stumbled and been forced to delay initial product rollouts. While the grind toward commercialization continues, companies are abuzz about possible uses for spider silk. It is made using renewable raw materials. It’s biodegradable yet waterproof. It’s strong and elastic. Spider silk is even garnering interest from